X-Plane.org (forums.x-plane.org) is likely the oldest and most extensive database of knowledge, add-ons, and everything else related to the X-Plane simulator. In the forums, you can chat with fellow pilots about a wide range of topics; the download section offers thousands of add-ons (aircraft, airports, utilities, etc.); and the store allows you to purchase paid content. For X-Plane fans, this is arguably the go-to website.
Live a good, honorable live. Then when you get older and think back, you’ll be able to enjoy it second time.
"I will always give so much time to the improvement of myself that I will have no time to criticize others." Chuck Norris