I posted the free daily eBooks from Packtpub.com before. Until 2017 they have been replaced by a free trial of some online courses. I believe most of the courses are based on the material from the available eBooks.
These courses are aimed at IT inclined people, could be a fun way to fill in the christmass break for some of you?
Doesn't look like the courses/books are donwloadable, unfortunately.
Access over 4,000 eBooks & video courses. Free for 10 days.
No credit card. No obligation
Perhaps a better deal being offered on the site is that every eBook and Video is $5USD.