We want people who are prepared to help with:
1) Constructive feedback, mainly on the GUI aspects
2) Research of and opinions on the historical set-up
3) Bug testing
You should not expect to be able to "play" CKII. This is an alpha, and many parts of the game are only roughly done. In fact, testing the game might ruin your experience of the final product. It's not a full time job, and people should not feel they have to contribute much, but we only want people who want to commit at least one hour each week for the rest of the year.
That said, we want people with a strong interest in the game, who want to make CKII to the most polished and best game ever made!