What websites or other resources can I use to read up on abstract concepts to improve my reading? LMK!

A strategy that I have been using and has been very effective is reading the ACs and thinking, "Does this destroy the argument?" similarly to the negation test in nec condition. Try to read the answers as grenades, and the one that blows up the argument the most is the right answer!

some of these questions just "feel" right idk if im going crazy plz tell me someone understands me