help me /sci/ I done fucked up.
I understand this, I know the rules but every time I look at it and try to do it myself I just fuck up and get brainfog and because I continue trying with brainfog I get a headache and give up.

I have three other papers I'm working on and all of them go pretty well and even tie into eachother but working on them doesn't go well with learning for the logic exam. I have to take all at this point. Any good resources? I feel like everyone uses different denotation, everyone does these fucking trees differently, and some people just don't do them at all.