Communities are a great way to get in touch with people sharing the same interest as you, or simply to provide some inspiration.
/r/bushcraft - All things related to Bushcraft - tools, techniques, schools of thought, history, etc.
/r/ultralight - Community about people supporting each other to reduce the weight of their wilderness backpacking packs.
/r/camping - A subreddit for campers concerned more about the act of camping about probably less about hiking long distances or light gear.
Other Online Communities
The Great Outdoors - The Great Outdoors Stack Exchange is a question and answer site for people who love outdoor activities, excursions, and outdoorsmanship.
Bushcraft Sweden - Swedish non-profit organization aimed to encourage and develop bushcraft.
Scouts Sweden - Organization aimed to encourage and develop outdoor skills, primary focus is for children.