Update free-science-books.md

[ankitpriyadarshii]

What does this PR do?

Add Resource(s) | Remove Resource(s) | Add info | Improve Repo

For resources

Description

Why is this valuable (or not)

How do we know it's really free?

For book lists, is it a book?

Checklist:

• [x] Not a duplicate
• [x] Included author(s) if appropriate
• [x] Lists are in alphabetical order
• [x] Needed indications added (PDF, access notes, under construction)

[eshellman]

In general, we do not link to file sharing sites.

[ankitpriyadarshii]

In general, we do not link to file sharing sites.

so what link should i provide, one containing book info as well??

[davorpa]

Hi @ankitpriyadarshii

The link should points to the authors book site or an stable mirror of one of providers that are listed here

https://github.com/EbookFoundation/free-science-books/blob/master/CONTRIBUTING.md#guidelines

I hope it helps you