From publisher blurb:

This is the first collected works of the Hack & Slash blog. Containing not only some of the most popular posts from the blog, but also a total of 15 new backgrounds for player characters for modern games!

62+ Pages of content!
d30 Table of Backgrounds! (Including the ones from the PHB)
Hotlinked .pdf!
New illustration of the Quantum Ogre
Public domain illustrations for the backgrounds!
A Guide for New Dungeon Masters!
The Scene in Adventure Design!
Avoiding the Deadly Difference!
Objective Design, Player Types
The complete Quantum Ogre series!
17 backgrounds (19 for Patreons)