Answer 1

I hope this article helps you:
https://realpython.com/JUMP_LINK__&&__python__&&__JUMP_LINK-import/

And here are some helpful libraries: https://www.ubuntupit.com/best-python-libraries-and-packages-for-beginners/

But I suggest you do get familiar with the python basics.

Answer 2

you need to change the import statement:

from freegames import square, vector

There are some other syntax errors. Maybe also typos.

Answer 3

What do you mean? Do you want to import another library?