Diabolo has been around for centuries! There are so many tricks, that even after 15 years of practicing it, I'm still learning and seeing new ones discovered within the diabolo community. Here are some diabolo tutorials I have created for various tricks.
1D Cradle Isolation
Cat's Cradle ("Bridge") variation in which the diabolo gets locked in place and the sticks rotate around.
Ringabolo (Ring + Diabolo) Tutorials
Ring + diabolo is an uncommon juggling form in which you spin a diabolo on a ring. While most people spin it with the string first, I discovered trick in early 2010 without using string at all. Many of the tricks I've created for this style use hoop/ring isolation to get the diabolo to spin.
1D Ringabolo Isolation
Spin the diabolo with only a juggling ring. Use basic ring isolations to give the diabolo spin on the side plane and wall planes.