Depends on what you're studying in ELA. If it's vocab then flashcard if it is a book report or test/quiz on the book use Sparknotes.com or Cliffnotes.com they give you the summary of all the chapters, character descriptions, plot, time period, etc. Love those sites never had to read the whole book and always got a good grade. It also depends on the schooling, online schooling is easier for english I think because for vocab u can just have open a separate tab of the vocab sheet. For regular school I would make flashcards and study them. Review guides never really helped me either though.
Hope that helps! :D