[brudgers]

Does it need to be the best? Or would good enough be good enough? What suits you best might not suit someone else at all. On the other hand, there are are many CS courses archived on Youtube and tons of old textbooks in circulation.

And of course, you can always buy a boxed set of TAoCP. It will probably keep you busy for awhile. Good luck.

[lesiki]

Sure, it's a valid nitpick.

My intended meaning was "What is your favourite CS refresher material available online", and agree that the answers will be subjective.

[brudgers]

Not trying to nitpick. Trying to get you from shopping mode to doing the hard work of learning mode.

I mean here’s the BG paper: https://dl.acm.org/doi/pdf/10.1145/322186.322188

[lesiki]

With that out of the way, curious whether you have an answer? What is your favourite CS refresher material that is available online?

[brudgers]

TAoCP in print. It’s the fixed point for CS.