diff --git a/ch_1_Lesson_Jonathan_Ho_Welcome_Back.py b/ch_1_Lesson_Jonathan_Ho_Welcome_Back.py
new file mode 100644
index 0000000..deb306e
--- /dev/null
+++ b/ch_1_Lesson_Jonathan_Ho_Welcome_Back.py
@@ -0,0 +1 @@
+print("Hello, World... again XD")
\ No newline at end of file
diff --git a/ch_1_assign_Jonathan_Ho.py b/ch_1_assign_Jonathan_Ho.py
new file mode 100644
index 0000000..ba68a29
--- /dev/null
+++ b/ch_1_assign_Jonathan_Ho.py
@@ -0,0 +1,52 @@
+Robot_Team = int(input("What Robotics Team do you want to look into?"))
+Robot_Stat = input("What statistic would you like to see?")
+
+
+Robot_TeamB = {1678: {'Location': 'Davis, CA, USA', 'Rookie': '2005', 'Participate?': 'Yes',
+	'Competition Names': [
+		'Central Valley Regional',
+		'Sacramento Regional',
+		'Aerospace Valley Regional', 
+		'Carver Division', 
+		'Einstein Field', 
+		'RCC Qianjiang International Robotics Invitational'
+	], 
+	'Competition Location': [
+		'Fresno, CA, USA', 
+		'Davis, CA, USA', 
+		'Lancaster, CA, USA', 
+		'Houston, TX, USA', 
+		'Houston TX, USA', 
+		'Hangzhou, Zhejiang, China'
+	],
+	'Awards': [
+		'Regional Chairman`s Award and Regional Winners', 
+		'FIRST Dean`s List Finalist Award (Katie Stachowicz), Regional Winners, and Industrial Design Award sponsored by General Motors',
+		'Regional Winners and Excellence in Engineering Award sponsored by Delphi', 'Championship Subdivision Winner and Entrepreneurship Award sponsored by Kleiner Perkins Caufield and Byers'
+	,]}, 
+	1111: {'Location': 'Edgewater, Maryland, USA', 'Rookie': '2003', 'Participate?': 'Yes',
+	'Competition Names': [
+		'CHS District Bethesda MD Event sponsored by Bechtel',
+		'CHS District Owings Mills MD Event sponsored by Leidos', 
+		'FIRST Chesapeake District Championship'
+	],
+	'Competition Location': [
+		'Bethesda, MD 20817, USA', 
+		'Owings Mills, MD 21117, USA', 
+		'Fairfax, VA 22030, USA'
+	],
+	'Awards': [
+		'Autonomous Award sponsored by Ford', 
+		'District Chairman`s Award', 
+		'Team Spirit Award sponsored by FCA Foundation'
+	]},
+	2222: {'Location': 'Tacoma, WA, USA', 'Rookie': '2007', 'Participate?': 'No', 'Competition': 'Pacific Northwest Regional 2007', 
+	'Competition Location': 'Pioneer Courthouse Square in Portland, OR, USA', 'Award': 'None'},
+	3333: {'Location': 'Julesburg, CO, USA', 'Rookie': '2010', 'Participate?': 'No', 'Competition': 'Colorado Regional 2010', 
+	'Competition Location': 'Ritchie Center in Denver, CO, USA', 'Award': 'Judges Award'
+	},
+	5555: {'Show Location': 'Warren, Michigan', 'Rookie Year': '2015', 'Participate?': 'Yes', 
+	'Competitions': ['FIM District Center Line Event','FIM District Marysville Event'], 'Competitions Location': ['Center Line, MI, USA', 'Marysville, MI, USA'],
+	'Awards': 'District Event Winner'}}
+# Prints out the input variables above and the answers for specific information are shown once the questions are answered
+print(Robot_TeamB[Robot_Team][Robot_Stat])
diff --git a/ch_2_assign_Jonathan_Ho.py b/ch_2_assign_Jonathan_Ho.py
new file mode 100644
index 0000000..6f2665c
--- /dev/null
+++ b/ch_2_assign_Jonathan_Ho.py
@@ -0,0 +1,101 @@
+teams = {}
+
+'''
+Robot_Team_all = {'1678': {'Number': '1678', 'Name': 'Citrus Circuits', 'Prog. Language': 'Java', 'Width': '15 inches', 'Length': '16 inches', 'Camera Vision?': 'Does not have camera vision system',
+	'Drivetrain Motors': '12 drivetrain motors'},
+	'744': {'Number': '744', 'Name': 'Shark Attack', 'Prog. Language': 'C++', 'Width': '13 inches', 'Length': '15 inches', 'Camera Vision?': 'Does have camera vision system',
+	'Drivetrain Motors': '10 drivetrain motors'},
+	'5852': {'Number': '5852', 'Name': 'Illusion Robotics', 'Prog. Language': 'C+', 'Width': '17 inches', 'Length': '16 inches', 'Camera Vision?': 'Does not have camera video system',
+	'Drivetrain Motors': '9 drivetrain motors'}}
+'''
+def list_teams(list_of_teams):
+	for team in list_of_teams:
+		print(str(team) + "\n")	
+
+def add():
+	Player_Add = input("Let's add a team! Choose any team. ")
+	if Player_Add != None:
+		teams[Player_Add] = {}
+		# Add Number 
+		num_question = input("Insert team Number ")
+		# Add name
+		name_question = input("Insert its name ")
+		# Add Programming Language
+		lang_question = input("Insert Programming Language ")
+		# Add Width
+		wide_question = input("Insert robot width (In inches) ")
+		# Add Length
+		long_question = input("Insert robot length (In inches) ")
+		# Add Cam Vision
+		cam_question = input("Insert Yes or No for Camera Vision on Robot ")
+		# Add Drivetrain Motor Number
+		drive_question = input("Insert Number of Drivetrain Motors on robot ")
+		if num_question.isdigit() and wide_question.isdigit() and long_question.isdigit() and drive_question.isdigit() and (cam_question == "Yes" or cam_question == "No"):
+			teams[Player_Add]["Number"] = num_question
+			teams[Player_Add]["Name"] = name_question
+			teams[Player_Add]["Prog. Language"] = lang_question
+			teams[Player_Add]["Width"] = wide_question
+			teams[Player_Add]["Length"] = long_question
+			teams[Player_Add]["Camera Vision?"] = cam_question
+			teams[Player_Add]["Number of Drivetrain Motors"] = drive_question
+			print(teams)
+		else:
+			print("Uh oh! One of your inputs was invalid. Make sure that the questions involving numbers are actually numbers, 'kay?")
+			teams.pop(Player_Add)
+
+def remove():
+	Player_Delete = input("Let's see. What team do you want to delete? ")
+	if Player_Delete != None:
+		if Player_Delete in teams:
+			teams.pop(Player_Delete)
+			print(teams)
+		else:
+			print("Sorry. That's not in the database. Try again.")
+
+def view():
+	view_input = input("Whose data do you want to view?: ")
+	team_information_input = input("What datapoint would you like to see?: ")
+	if view_input in teams and team_information_input in teams[view_input]:	
+		print(teams[view_input][team_information_input])
+	else:
+		print("Sorry. I don't think your value is in the data files. Make sure your values are strings and try again.")
+
+def modify():
+	modifier_team = input("\n Whose team's data would you like to modify?: ")
+	modifier_datapoint = input("\nWhat datapoint would you like to modify?: ")
+	if modifier_team in teams:
+		print("The current value for " + str(modifier_datapoint) + " of team " + str(modifier_team) + " is " + teams[modifier_team][modifier_datapoint])
+		modifiee_datapoint = input("\nWhat value would you like to change it to?: ")
+		teams[modifier_team][modifier_datapoint] = modifiee_datapoint
+		print("The new value has been changed to: " + str(modifiee_datapoint))
+	else:
+		print("Sorry. I'm afraid your input is not in the database. Try again")
+
+def search():
+	search_team = input("Which team do you want to look for? ")
+	name_team = input("What is the name of the team, for safety measures? ")
+	if search_team in teams and name_team in teams[search_team]['Name']:
+		print(str(search_team in teams))
+	else:
+		print(False)
+
+
+while True: 
+	Player_Use = input("Hello, User. Welcome to the FIRST Robotics Team Menu! What would you like to do? ")
+	if Player_Use == 'add' or Player_Use == 'Add':
+		add()
+	elif Player_Use == 'view' or Player_Use == 'View':
+		view()
+	elif Player_Use == 'remove' or Player_Use == 'Remove':
+		remove()
+	elif Player_Use == 'search' or Player_Use == 'Search':
+		search()
+	elif Player_Use.lower() == "modify":
+		modify()
+	elif Player_Use.lower() == "view all teams":
+		list_teams(teams)
+	elif Player_Use == "quit":
+		print("Thanks for using this! See ya real soon!")
+		break;
+	else:
+		print("Sorry! I didn't get that! Please try again.")
\ No newline at end of file
diff --git a/ch_3_assign_Jonathan_Ho.py b/ch_3_assign_Jonathan_Ho.py
new file mode 100644
index 0000000..ba70a37
--- /dev/null
+++ b/ch_3_assign_Jonathan_Ho.py
@@ -0,0 +1,120 @@
+Team_Data = {'1678': {'Name': 'Citrus Circuits', 'Location': 'Davis, CA, USA', 'Rookie': '2005', 
+	'Competition Names': [
+		'Central Valley Regional',
+		'Sacramento Regional',
+		'Aerospace Valley Regional', 
+		'Carver Division', 
+		'Einstein Field', 
+		'RCC Qianjiang International Robotics Invitational'
+	], 
+ 
+	'Competition Location': [
+		'Fresno, CA, USA', 
+		'Davis, CA, USA', 
+		'Lancaster, CA, USA', 
+		'Houston, TX, USA', 
+		'Houston TX, USA', 
+		'Hangzhou, Zhejiang, China'
+	],
+	'Awards': [
+		'Regional Chairman`s Award and Regional Winners', 
+		'FIRST Dean`s List Finalist Award (Katie Stachowicz), Regional Winners, and Industrial Design Award sponsored by General Motors',
+		'Regional Winners and Excellence in Engineering Award sponsored by Delphi', 'Championship Subdivision Winner and Entrepreneurship Award sponsored by Kleiner Perkins Caufield and Byers'
+	,]}, 
+
+	'41': {'Name': 'RoboWarriors', 'Location': 'Warren, NJ, USA', 'Rookie': '1997', 
+	'Competition Names': [
+		'FMA District Mount Olive Event',
+		'FMA District Montgomery Event',
+		'FIRST Mid-Atlantic District Championship'
+	],
+	'Competition Location': [
+		'Flanders, NJ, USA',
+		'Skillman, NJ, USA',
+		'Bethlehem, PA, USA'
+	],
+	'Awards': 'Innovation in Control Award sponsored by Rockwell Automation',
+	},
+
+	'7823': {'Name': 'Double Negative', 'Location': 'Rogers City, MI, USA', 'Rookie': '1997', 
+	'Competition Names': [
+		'FIM District Alpena Event #1',
+		'FIM District Alpena Event #2',
+		'Michigan State Championship - Ford Division', 
+	],
+	'Competition Location': [
+		'Alpena, MI, USA',
+		'Alpena, MI, USA',
+		'University Center, MI, USA'
+	],
+	'Awards': [
+		'Highest Rookie Seed and Rookie Inspiration Award sponsored by National Instruments',
+		'Rookie All Star Award and District Event Finalist',
+		'Judges` Award'
+	],}
+	}
+
+
+
+def list_teams_all(list_of_teams):
+	for Team_Data in list_of_teams:
+		print(str(Team_Data) + "\n")
+
+def add_team():
+	Player_Add = input("Alright, let's add a some teams to our database! Choose a team or piece of info to place in the database. ")
+	if Player_Add.isdigit and Player_Add != None:
+		Team_Data[Player_Add] = {}
+
+def delete_team():
+	Player_Delete = input("As you wish it. Which team would you like to remove from the database? ")
+	if Player_Delete.isdigit and Player_Delete != None:
+		Team_Data.pop(Player_Delete)
+
+def view_info():
+	print("Just a head's up. Everything in the database for each team shown here is capitalized, so make sure the letter is uppercase for the second question. :P")
+	view_team = input("Now, which team would you like to view? ")
+	view_data = input("What would you like to know about it? ")
+	if view_team in Team_Data and view_data in Team_Data[view_team]:
+		print(Team_Data[view_team][view_data])
+	else:
+		print("Sorry. This isn't in the data files. Try again.")
+
+
+def modify_info():
+	print("Just a head's up. Everything in the database for each team shown here is capitalized, so make sure the letter is uppercase for the second question. :P")
+	change_team = input("What team's data would you like to modify? ")
+	change_data = input("What datapoint would you like to change? ")
+	if change_team in Team_Data and change_data in Team_Data[change_team]:
+		print("This team's current value for " + change_data + " is " + Team_Data[change_team][change_data])
+		change_datapoint = input("\n So what do you want to change about " + change_data + "? ")
+		Team_Data[change_team][change_data] = change_datapoint
+		print("Drumroll! The team's new value has been modified to... " + str(change_datapoint) + "!")
+	else:
+		print("Sorry. What you want to modify is not in our files. Try again.")
+
+def search():
+	team_search = input("What team would ya like to look for? ")
+	print("Let's see... is " + str(team_search) + " anywhere in our database? " + str(team_search in Team_Data))
+
+while True:
+	Player_Control = input('''Good morning, afternoon, and evening to all! Welcome to our FIRST Robotics Menu! What would you like to do here? Type in 'add' to add a team to the database, 'remove' to remove it
+		'view' to check a team's data, 'modify' to change the data of the team, 'search' to ensure the teams you added to the database are in there, and 'see all teams' to look at the data in 
+		the database. To leave, just type 'quit'.
+		''')
+	if Player_Control == 'add' or Player_Control == 'Add':
+		add_team()
+	elif Player_Control == 'remove' or Player_Control == 'delete':
+		delete_team()
+	elif Player_Control == 'view' or Player_Control == 'View':
+		view_info()
+	elif Player_Control == 'modify' or Player_Control == 'change':
+		modify_info()
+	elif Player_Control == 'search' or Player_Control == 'Search':
+		search()
+	elif Player_Control == 'see all teams':
+		list_teams_all(Team_Data)
+	elif Player_Control == 'quit':
+		print("Gotcha! See ya around!")
+		break;
+	else:
+		print("Sorry! Did you say something else? Your reply is not valid. Please try again! :)")
diff --git a/ch_4_assign_Jonathan_Ho.py b/ch_4_assign_Jonathan_Ho.py
new file mode 100644
index 0000000..c8fabaa
--- /dev/null
+++ b/ch_4_assign_Jonathan_Ho.py
@@ -0,0 +1,84 @@
+from math import sqrt
+
+# 2D Pythagorean Theorem
+class Point():
+	def __init__(self, x, y):
+		self.x = float(x)
+		self.y = float(y)
+
+	# Pythagorean Theorem
+	def Distance(self):
+		hypo = self.x ** 2 + self.y ** 2
+		return sqrt(hypo)
+
+# Three Dimensional Pythagorean Theorem
+class Point_3D(Point):
+	def __init__(self, x, y, z):
+		self.z = float(z)
+		super().__init__(x, y)
+		
+
+	def Distance(self):
+		hypo_2 = super().Distance() ** 2 + self.z ** 2	
+		return sqrt(hypo_2)
+
+while True:
+	Operation = input("What type of dimension do you want to use for the Pythagorean Theorem? If you wish to leave, type 'exit'.")
+	if Operation == "2D":
+		x = input("Enter the first value of your first leg of your triangle.")
+		y = input("Enter the second value of your next leg.")
+		# Assure if x and y are integers
+		if x.isdigit() and y.isdigit():
+			point = Point(x, y).Distance()
+			print(point)
+		else:
+			print("Sorry, the variable is not a number. Try again.")
+	
+	elif Operation == "3D":
+		x = input("Enter the first value of the length of the side of your 3D rectangle.")
+		y = input("Enter the next value of the second length of your 3D rectangle.")
+		z = input("Now enter the height of your 3D rectangle")
+		# Validates if the inputs are integers for the code to use the if statement
+		if x.isdigit() and y.isdigit() and z.isdigit():
+			calc_3D_point = Point_3D(x, y, z).Distance()
+			print(calc_3D_point)
+		else:
+			print("Sorry, your variable wasn't an integer. Try using a number.")
+
+	# If the user wants to compare 2D and 3D points
+	elif Operation == "Origin":
+		# 2D
+		x = input("Enter the first value of your first leg of your triangle.")
+		y = input("Enter the second value of your next leg.")
+		# Assure if x and y are integers
+		if x.isdigit() and y.isdigit():
+			point = Point(x, y)
+			print(point)
+		else:
+			print("Sorry, the variable is not a number. Try again.")
+		# 3D
+		x2 = input("Enter the first value of the length of the side of your 3D rectangle.")
+		y2 = input("Enter the next value of the second length of your 3D rectangle.")
+		z2 = input("Now enter the height of your 3D rectangle")
+		# Validates if the inputs are integers for the code to use the if statement
+		if x2.isdigit() and y2.isdigit() and z2.isdigit():
+			calc_3D_point = Point_3D(x2, y2, z2)
+			print(calc_3D_point)
+			if point.Distance() > calc_3D_point.Distance():
+				print("The point farthest from the origin is: (" + str(x) + ", " + str(y) + ").")
+			elif point.Distance() < calc_3D_point.Distance():
+				print("The point farthest from the origin is: (" + str(x2) + ", " + str(y2) + ", " + str(z2) + ").")
+			elif point.Distance() == calc_3D_point.Distance():
+				print("My, my. The distance from the origin between those two coordinates are equal. How coincidential!")
+			else: 
+				print("Oops! I didn't get that. Try again.")
+		else:
+			print("Sorry, your variable wasn't an integer. Try using a number.")
+
+	# If the user wishes to leave
+	elif Operation == "exit":
+		print("So long! Till we meet again.")
+		break;
+	# If the user types it incorrectly
+	else:
+		print("Sorry. Your response wasn't valid. Try 3D, 2D, or Origin.")