I might add, DeLorme topo atlases, which also contain obscure country gravel roads and forest service roads. I use the ginormous State paper atlases, but I gather that there is a Windows compatible computer version of the atlases that lets you print custom topo maps and is a heck of a lot cheaper for people who travel widely than buying individual state's atlases.
Also, let's not forget that once you get to the parking lot, you can get even more detail from the USGS quad maps (free in electronic form) and local trail maps (snap a photo of trailhead map even if a paper copy is available - I have been known to have a map go awol on the trail).
Ultralight Backpacking Tips, Mike Clelland (how to, not necessarily gear-centric)
Hiking and Backpacking, Victoria Logue (another more organized how to...)
National Geographic Ultimate Hiker's Gear Guide, Andrew Skurka (general info on materials and construction of gear, more useful than a specific "rate this" guide, because gear models come and go; what do you actually need for a given type of trip)
These are three useful books for novices.
If you live in the USA: The invaluable "60 Hikes within 60 Miles of ......(name of city)" series. There are at least 20 of these guides. The one for St. Louis is excellent. Directions, trail map, short description of trail, including photogenic spots, trail length and difficulty, nearby attractions. Also see "The Best in Tent Camping (...name of state)" series from Menasha Ridge publisher.
