Heey, do you know any website to download textbooks?

study-well:

Hi. You could try these:

http://www.openculture.com/free_textbooks

http://bookboon.com/en/textbooks-ebooks

https://openstax.org/higher-ed

I also suggest checking ebook stores (e.g. kindle books, play books) as they often have some books available for free download.