What's your recommended programming books?

Can you recommend any decent books for us all to learn from? For a while I've been downloading free programming PDF's but I rather a hardcopy and so with a limited budget i've been purchasing older versions of the books off ebay and got some amazing bargains. [Highly recommended!]

They're old, but at least it's a start!

Currently Doing:
Write Modern Web Apps with the MEAN Stack - ISBN-13: 978-0133930153 Deep end dive into the stack but worth the exposure and introduction tooling - Gulp, Mocha and Chai, Karma, Bower, deployment on Heroku and Digital Ocean.

Just on a quick tip - Beware if you are ordering programming books specifically from ebay, ensure that its a book - I've seen some people selling "pdf" copies instead of a hardcopy.

Anyone else got good ones to recommend?