I'm trying to give myself an undergraduate education in math and/or physics this way. When I study a subject, here's what I'd ideally need: 1. Explanation of

I'm trying to give myself an undergraduate education in math and/or physics this way. When I study a subject, here's what I'd ideally need: 1. Explanation of the subject. Could be videos or textbook. 2. Problems to work on. Much like learning guitar, you have to learn math and physics by doing. 3. Feedback on my solutions. Did I solve it right, or did I have some fundamental misunderstanding? Also, when I'm stuck, it can be useful for someone to look at it and say "here's where you went wrong." 4. Community and deadlines. It's easy to put off the next lesson/chapter without those. We talk about students with "sufficient motivation," but motivation isn't a fixed thing, and having a community and deadlines can really push up motivation. A web page or video can explain a subject. A textbook will have problems to work on. But feedback, community and deadlines are something you get from a University class or a MOOC. And there are precious few MOOCs for even 3rd or 4th year undergraduate topics.