learning the mathematics for fun. grade 7 student who wants to learn mathematics ahead of classes since it is nicer than the other classes

please don't be too harsh on me, i am willing to learn, and i will try not to ask anything without reading a few webpages first

feel free to edit anything i do

From now on I will spend time making my questions Correct English, please tell me if they are wrong

current interests in order:

• linear algebra
• abstract algebra
• calculus
• topology