ok, if you saw my thread, just post in it your character name and their partner Pokemon (make sure you don't double-up with other players though) - then, i'll get you to solve 1 riddle, and you're in! easy as that.
once you are in, just check every so often, at least once a week is best, and reply to any events in the "Current Event" post in my thread (via PM) - it just works like that. in the end, you will have to work out which player killed the pokemon, and which pokemon was killed.