Outside of lessons, I mostly watch Massolit videos on my texts (your school should give you access.) Finding and memorising Ao5 (secondary sources) is also quite a big factor of my work outside of lessons. I did summaries of chapters/scenes/poems as well, linked to context and Ao5, as well as reviewing past papers and exemplar essays. For annotating, Genius (yes the music site) does a lot of analysis of texts for if you’re stuck, if not SparkNotes and Cliffnotes do good summaries. I highlight key quotes, and underline anything important/anything relating to a theme, and I have sticky notes with context or longer annotations, and I also highlight page numbers with important scenes.