For Polish speakers, there's "Ważniak". http://wazniak.mimuw.edu.pl/index.php?title=Algorytmy_i_struktury_danych http://wazniak.mimuw.edu.pl/index.php?title=Al

For Polish speakers, there's "Ważniak". http://wazniak.mimuw.edu.pl/index.php?title=Algorytmy_i_struktury_danych http://wazniak.mimuw.edu.pl/index.php?title=Algorytmy_i_stru... But wait, it's a whole goddamn curriculum from IT studies (Bachelor's + Master's), including several kinds of maths, networking, databases, graphics, logic, basic electronics, signal conversion, AI, compiler basics, embedded, and more. The chapters are divided into numerous modules, most with animated examples (like for algorithms), theory backing everything, examples, exercises to perform, and more. Really, the only flaw is that it's not in universally spoken English.