Answer 1

Unicode characters are a representation of symbols, each character is given a unique code, so that you can use them anywhere, instead of having to copy paste everytime you want a symbol.
You can't make unicode characters, you can only add them to your code, there are many of them, and you can find a full list in google.
To print a unicode character in python, you write the character's code after \u
Example:
print('\u1234')