I'll throw out some book recommendations:

Gear + Tips

Mike Clelland: UL Backpackin' Tips

Andrew Skurka: Gear Guide

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)

Elizabeth Wenk: JMT

Yogi's PCT guide

Stories

Carrot Quinn: Thru Hiking Will Break Your Heart

Dan White: The Catcus Eaters

Cheryl Strayed: Wild