Textbooks from old Students

[MikeJ]

Hi everyone,
I've just started to do my summer internship and my friends told me that it's better to find old textbooks because usually, students do not erase the answers and it will be easier to learn the topic fast (without wasting the time to find correct answers). Is there any place where I can search?
Thanks!

[Grethen]

Hello,
For the textbooks, you can take a look at https://booksrun.com service. There you can find any kind of a textbook, sell yours or buy someones. Usually I'm selling my old books there.
Good luck!