I'll throw out some book recommendations:
Gear + Tips
Mike Clelland: UL Backpackin' Tips
Liz Thomas: Backpacker Long Trails
Maps
Tom Harrison (I've only used the JMT and Whitney High Country maps, but I'd trust these for other trails too)
Guides
Swami & PMags: 12 Classic Long Distance Trails (ebook only)
Swami & PMags: 12 Classic Hikes in Colorado (ebook only)
Stories