What kind of skills would I need to acquire in order to contribute to a project like this? I've read some blog posts from one of the Dolphin devs and I have to

What kind of skills would I need to acquire in order to contribute to a project like this? I've read some blog posts from one of the Dolphin devs and I have to admit to being really envious of him for working on such an interesting and successful project. Basically I just need some sort of framework or map to start with.