I just picked up this book from the library. Does a good job introducing the history of Draenor/Outland, and all the major characters, locations, dungeons in TBC.
I tend to use WoWpedia, but WoWWiki is the one I know has the information on the Magic schools. As for the Chronicle, I've already bought and read through it, but I appreciate the recommendation. Have you seen the front cover of the Warcraft Chronicle Volume 2? Damn son, I'm looking forward to that.
Amazon has the release date at March 14, 2017.
https://smile.amazon.com/gp/product/1616558466/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Here's the Amazon Page.
In case you're wondering, the second volume is due in March 2017.
https://www.amazon.com/World-Warcraft-Chronicle-BLIZZARD-ENTERTAINMENT/dp/1616558466