There's always libgen if the book you want is behind a paywall. Like it's cousin scihub, it is very easy to use, fast, and has most of the books you could possi

There's always libgen if the book you want is behind a paywall. Like it's cousin scihub, it is very easy to use, fast, and has most of the books you could possibly need. Considering the awful practices of most scientific publishers, I have no problems with illegally downloading textbooks.