Hi everyone,
Packt Publishing are currently having a $10 sale on all technical computing ebooks and videos. I'm not sure when this deal will expire (their count-down timer is expired, but I was able to purchase the books for the $10 price). They've got titles in a wide range of disciplines, including Application and Web Development, Big Data, Networking, Virtualization and Cloud, and Game Development. If you're after a huge saving on technical books, take a look!
The books can be found at:
Packt also do a free ebook each day (DRM free, multiple formats) at https://www.packtpub.com/packt/offers/free-learning . You need to create a free account to claim. This has been posted on ozbargain multiple times previously.