Scratch is an online community made by MIT for children to not only learn about programming and animation, but to have fun and chat with friends. Basically, it's Facebook and Youtube combined, but techy.
You make little games, or videos, or whatever by snipping together these action and programming "Blocks" like Legos. You can do various things with these blocks, like move a character around, animate a character, or make a screen scroll. At first, it's kind of hard to understand, but you get a hang of it.
The Scratch Team and it's users are very welcoming, and their are a lot of fanbase-related things on Scratch. Anime, Gaming, Music, Art, whatever you're into, their are hundreds of thousands of people on Scratch into the same thing.
Bottom line, I highly, highly, HIGHLY recommend you give Scratch a try.