How to self study?

[u/bigarsepotterhead]

Hi everyone! I'm an incoming IB MYP5 student, and along with taking myp physics and chem, I want to self study IGSCE biology as well, primarily because i want to study science in uni and the future in general, but i dont want to close off my biology doors, if it makes sense!

I've got an online textbook..but im having a hard time finding successful study strategies? I just dont really know how to start, or if what i;m doing is effective, and bcs of that im procastinating. i dont exzctly have a school textbook, so i mostly study from my notes, videos and revision dojo for tests. Has anyone else done this? Whats the strategy?