Just google it and browse around the web and on YouTube. There are plenty of stick tricks - related sites. Take advantage of the power of the internet.
To help you out, cite drummers who do these frequently as references. Examples: Tommy Lee, Gerry Brown, John Blackwell, Vikki Foxx, Tommy Aldridge, Thomas Lang, and many more...
Or to be specific, try to look for the January 2003 issue of Modern Drummer, which has a feature about stick twirling.