I know this is a silly statement to say, but I really want to excel in Chemistry. The thing is, I forgot numerous things from elementary Chemistry such as introduction to basic stoichiometry. Do you know any valuable study sites and books that I can study from beginning to advanced Chemistry? Thanks.
Crash course science, which is run by Hank Green (renowned author John Green's brother) has proven quite useful to me, and I was using it up to the end of first year university. The only issue is that he talks incredibly fast, but you get used to it after a while.