[SEJeff]

If you want to learn about Algorithms, you need to buy the entire series on Algorithms from Robert Sedgewick:

https://www.amazon.com/Algorithms-Parts-1-4-Fundamentals-Str...

https://www.cs.princeton.edu/~rs/

I don't think there is a single better source on algorithms than everything from Robert Sedgewick.

[kchoudhu → SEJeff]

I recommend anything other than Sedgwick for algorithms and data structures.

I damned near didn't touch a computer for two years after being forced to trudge through his books in college.

[auggierose → SEJeff]

Some would say this is a pretty good source too:

https://mitpress.mit.edu/books/introduction-algorithms