If you're champing at the bit to try out Alliance, the Seattle chapter is having an event the weekend of 11/9-11/11. The site is actually closer to you than the OR site in February. As Matt suggested, you could NPC your first game, which is free, and if you let plot@alliance-seattle.com know you're coming by tomorrow, you can get in on the NPC meal plan: $15 for food the whole weekend. That way, you could get an idea of how it feels to play different styles, and wouldn't have to have your costuming and build ready by then. There's a lot of player crossover between these two games. That is, nearly all of the posters in this thread will be there. It should be a lot of fun.
As for being a human, well, some of my best friends are humans. Take Adam up on emailing oregonplot@gmail.com to work out your background. Often your character's background can help shape which personality aspects you want to explore for him. Everyone's PC has something of themselves in it, otherwise we wouldn't be able to play them and make decisions for them for the entire weekend. I personally find it rewarding exploring the differences and similarities between my PC's personality and my own.
As for being a human, well, some of my best friends are humans. Take Adam up on emailing oregonplot@gmail.com to work out your background. Often your character's background can help shape which personality aspects you want to explore for him. Everyone's PC has something of themselves in it, otherwise we wouldn't be able to play them and make decisions for them for the entire weekend. I personally find it rewarding exploring the differences and similarities between my PC's personality and my own.