On my channel, you'll find tutorials on how to make airplanes for X-Plane, using free tools for the entire process.
You'll also find videos of the sample plane, the ERJ-140, in different phases of completion and features. It is available for purchase on the X-Plane.org online store.
Additionally, I have been the first X-Plane author to port high-grade FSX payware over to X-Plane. My channel features release videos of these gems, so if you wish to stay up to date on the latest and greatest X-Plane add-ons, this is the channel to subscribe to!