Download Anki, find an all in one algebra cheat sheet online. Make a card for everything on that sheet. Use Lightshot, it’ll speed up the process. Take the number of cards, divide it by 15. This is the number of new cards you will add to your rotation each day. When reviewing your cards, make sure you have a thorough understanding in your mind’s eye. If you don’t completely understand how something works just look it up on YouTube until you do. Feel free to edit your cards in ways that will help you understand better. For example, adding a mnemonic or metaphor. In addition, do practice problems for at least an hour everyday. Just find these online by subject, and once you’ve covered everything start doing course review sets. If you do this you will have a solid understanding within three weeks. You’re welcome.