I've done exactly what you are talking about, so I think I have some insight that might be helpful. For me, the biggest aid was finding good books, ones with exercises and that explained the material very well. Then it was just a matter of reading, actually doing all the exercises, and struggling with the material until I could fully understand it; then I moved on to the next chapter/book/etc. I've worked through a l…
Thanks for this! Can you suggest a book that would be a bit more introductory and cover Algebra well? I missed out on ever understanding it properly in school and would love to try again.
yes, I would recommend "Algebra 2" published by McGraw-Hill (https://www.amazon.com/Glencoe-Algebra-2-McGraw-Hill-Educati...). I actually had to start there myself, now those many years ago :).
Best of luck!