Holy fuck, after 1 month of not using my pc and no coding I look at the project I was working on and it looks like chinese, I don't understand anything, so step 1 it's gonna be trying to remember how this thing worked (caveman brain turned on)

Either the code is indeed an unreadable pile of poo - or you are new.
The former is solved by refactoring it to a readable state.
The latter is solved by getting more coding experience.

documentation should be written before, after, and most importantly *during* development: and it should cover

1. what you HAVE done

2. what you are *considering* doing and why

3. what you plan on doing in total (the dreaded todo list and all the relevant would-dos)

4. what you plab on doing in the short term, or given cycle, as well as things to try and accomplish *today* in order to better focus your efforts

5. decisions you've made, tradeoffs, and the reaaoning for then at the time.

6. a note about where you left off in the last session

Comments, do you use them ?

*questions your coding practices