[dragon96]

Since so many CS professors make their course materials available for free, you should take advantage of that and piggyback off of multiple sources. I often search for "[Concept] lecture notes", choose one of the links (based on reputability, amount of math, etc.), and check that the other sources say the same thing. You'd be surprised the extent which an independent explanation can fill in the gaps of your understanding.

CS theory is fairly modular, so there's no need to stick to a single set of course notes or textbook for different topics -- just find whoever does it best for a given topic.

Also do lots of problems.

[hookedonwinter]

That's great advice. Thank you!