I forget where I originally saw this, but someone put together a document titled "How to Take all the Math Classes You Need." (https://docs.google.com/document/d/1G-hSdO5Tm9Nc6E4GobZZlwD0...)

While it assumes a level of competence of basic algebra, it essentially mimics a self-study math major and provides links to lecture recordings, widely used textbooks, problem sets, and answer banks to said problem sets. You obviously have to be self-motivated, but it beats paying $50 per month for the service OP's post links to.

> but it beats paying $50 per month for the service OP's post links to.

I used this with my kids.

The $50 a month to make it easy is worth it for many people, and is downright cheap compared to many approaches.

Now, there's other options-- Khan is also great and free. But always having a bite-sized chunk to do, immediate feedback, spaced repetition, etc-- it's pretty good.