Dave's Wonderful World of Yo-Yos: Includes message board, auctions, images by Ron Caswell, museum of collectibles, memorabilia, and patents [PDF], history, image downloads, and links.
Extreme Yo: Provides instructional videos of tricks, brief history, and a message board.
National Yo-Yo Museum: Features displays, photographs, events, history, and contests. Directions and hours included. Located in Chico, California.
R.P.M the Yo-Yo Center: Includes message board, chat room, directory of clubs organized by location, and a directory of links.
Scarecrow's Yo-Yo Craft: Painting, decorating, and how to make yo-yo bags, pogs, and freehand weights.
The Next Level: Includes videos of tricks, maintenance tips, mods, and links.
The Yo-Yo Tweak: Tricks and mods explained through POV images, maintenance tips, reviews, and links.
Wild Jimbo's Yo-Yoing Resource: Includes weight charts, bearing cross reference, string comparison chart, videos, painting projects, and an image gallery.
Yomania.com: A selection of tricks, reviews, and tips with a message board.
YoYoinfo: Includes a glossary, FAQs, and Who's Who. Also features world and national champions information.