Greetings. This is the founder of PencilTree.
PencilTree is a crowdsourced video-based wiki. It is your one-stop location to learn everything there is to know about anything. Most importantly, PencilTree gives subjects a structure, so you can pick a subject and then study it from beginning to end - following the correct path of learning.
What kind of subjects can be created? Anything you can imagine, as long as the videos can be organized into a structure. You can even create subjects for your application tutorials.
Looking forward to hearing your feedback!
PencilTree