Study.com - Courses that take longer than a month?

[Ideas]

To expand on one part of Synicaal's post, Study.com courses don't go into much depth, and many people are sure they are not real college-level learning. From other threads, it seems like you actually care about learning the material. If that's true, you may want to take Microbiology elsewhere.

Straighterline is partly liked for being easy to speed through, but even they have harder material than Study.com, apparently. (I have not yet been a Straighterline member, but Study.com is quite simplified.)