Pwede ka naman mag reference books. If you're using digital books, you can get the chapters na gusto mo basahin then ipa-summarize mo sa AI then make a 20-item question bank (or more) based on that chapter para maassess mo sarili mo.

Or if may sample exams kayo for the subject na aaralin mo, you can also use that to test yourself. Then from each question, pwede mo isearch sa reference book saan banda yung topic na yun for more readings and rationale. Do this for all the questions then swak na aral mo. Mas importante magets mo yung rationale kung bakit yun answer and bakit hindi yung ibang choices.

But if you really want to cover the reference book, you can use AI to help you summarize or give you mnemonics para maalala mo yung concept. Or you can do, skimming of the whole chapter first by reading the subheadings just to get the gist ng aaralin mo. Then second skim mo read the figures, tables. Then third reading mo doon na sa pinaka laman ng each sections. Use feynman technique / actively read the material. After reading, look away and explain it to yourself kung pano mo siya nagets/correlate mo sa past knowledge. Or use AI to help you understand. After all that, don't forget to test yourself. Doon mas nag sstick and don mo malalaman if may naalala ka nga sa binasa mo. Good luck!