http://yoyoexpert.com/
If you are like me and had yo-yo's in the 90's and early 2000's this site can get you back into it. I was at a craft fair recently and bought a yo-yo. Turns out there was another leap in yo-yo technology in the mid 2000's. If you can get past the bind return you are golden.
That site is a great resource for learning tricks. I'm starting to try the expert level but there are still intermediate tricks I can't do. I also bought the Duncan light up free hand. Amazing!!!