Quality books free of charge

Many of you may find this resource very useful Рits a site that provides  books on a wide range of subjects free of charge (PDF format, download).

The books contain advertising, which is why they are free to users, I’ve read several and found them of exceptionally high quality in both format and content. They have also introduced videos for some of the topics.

They measure up and considering the cost of books and training well worth a visit:

http://bookboon.com/