Trail Tested

Trail Tested: A Thru-Hiker's Guide to Ultralight Hiking and Backpacking - Justin Lichter

This is an excellent book, no matter what level of backpacking you're at. I know I'll come back to re-read the sections on backpacking with your dog and hiking internationally at the very least. Trauma knows his stuff and packs a lot of information into each section. If you hike, you need to read this.