The course I’m in uses Algorithms (Fourth Edition) by Sedgwick and Wayne^[1], and I consider it pretty good. A large focus is on clear implementations that demonstrate the core parts of each algorithm, without getting bogged down in specialization, which I can appreciate. The book also has very good visualizations (they call them traces) if you learn better visually. The only real downside is it’s entirely Java oriented material. But since you’re working with C# this probably isn’t a deal breaker.

The other recommendation in the thread is Introduction to Algorithms, which I’ve read chapters of (used as reference) — personally it’s ok, definitely more abstract and math heavy, so if that’s something you want or appreciate then it’s a good option.

There’s also The Art of Computer Programming by Knuth, which to me is grad level stuff, very very math heavy, but also brilliant, if you can keep up.

Honestly probably a good thing long-term, lots of platforms have been dragging their heels in adopting better newer codecs, so maybe this will finally give the justification required to put in the engineering hours.