Sharing notes/tips?

Can y'all share your study like tactics or notes? Just to help everyone on the Reddit.

I'm a pure bio chem student taking elec history but if y'all wanna share notes for other subjects can we? If you guys have online resources or study websites you use.

Personally, I've been using the savemyexams website, not sure what other websites there are tbh.

Oh, but if y'all have notes for chemistry or science practical tips, or formats/tips for social studies/history, pls share 🙏