Best Backpacking Websites:

The best websites for learning backpacking, camping, and hiking skills.
(Or at least the ones that I use.)

TRip Reports and Skill Building

Backcountry Banter
Joe Brewer shares his insights and experiences gained from hiking thru hikes, evaluating gear, and constructing his own DIY hiking and camping gear.
http://backcountrybanter.com/

Andrew Skurka
Andrew Skurka is a legend among lightweight backpackers and thu hikers. His claim to fame was completing a 6000 mile hike through Alaskan wilderness.  He now designs gear, teaches skills, and guides expeditions.
http://andrewskurka.com/

Sintax77
Share in the adventures of one of the more prolific hikers of the Northeast.  Sintax records his trips and shares the adventures in long form on YouTube.  His blog also has those stories, route maps, GPS coordinates, gear lists and additional trip data. While no expert, Sintax77 has amassed considerable skill and there is a joy of learning with him as he increases the level of intensity in his trips.
http://www.sintax77.com/

Buying and Selling Gear

Lightweight Hiker
Buy & Sell your hiking gear more easily.  This site aggregates across multiple listing sites to make life slightly easier.
https://lwhiker.com

More to come.  I certainly have a longer list but adult life calls.  I'll add to this as time permits.