I don't think there exist any book qualified as "textbook" except this one. Discrete Math by Oscar Levin.
https://discrete.openmathbooks.org/dmoi3/
No left as exercise bullshit, no prove yourself bullshit, etc. Everything is explained thoughtfully and multiple times in the book, to ensure the readers really get the idea of the subject.
https://news.ycombinator.com/item?id=34439828
Not really a math book but I really enjoyed "Genius At Play", a biography of John H. Conway.
Also anything from Raymond Smullyan (logic musings/riddles).
None. I learned the most from passionate and personable professors.
I don't think there exist any book qualified as "textbook" except this one. Discrete Math by Oscar Levin.
https://discrete.openmathbooks.org/dmoi3/
No left as exercise bullshit, no prove yourself bullshit, etc. Everything is explained thoughtfully and multiple times in the book, to ensure the readers really get the idea of the subject.