Make and Fly a Tumblewing Instructions
More Tumblewing Instructional Videos
Here are some other instructional videos about making the classic, original tumblewings. This one is by John Collins (The Paper Airplane Guy and tumbling wing inventor).
Here are some by Phil Rossoni.
And here is Phil's Instructables page.
Once you master making and flying tumblewings, the next logical step is foam gliders.