Need some help

[Combat Lobster]

I'd say take a long look at the games that appeal to you and figure out why they appeal you. Think about game concepts that contribute to an great experience and see if you can put a spin on it. One the best ways to learn design is to study what already exist and build off that. Also don't forget that being apart of a team, means you need good group communication.
Which will be tough to sell your idea to the team. Also remember your first game is more than likely going to bomb.

Why not make a list of random game ideas; it doesn't matter if they have been done/or are really terrible write them down. They might be crappy at first, but if you reflect on why it's a crappy idea then you might be able to come up with a better version.

Edit: Actually after re-reading your post I'm confused; do you want to be a game writer or designer?

Edit Edit: Shouldn't this be in the 'help' section?

Edit Edit Edit: I know of a "Gaming making thread" that would be a great resource, but it's on Something Awful's forums, so I can't link you to it without you dropping 10 bucks. I'll see if I can work around it. Here's the best I can grab:

http://programarcadegames.com (great tutorial series mnd found on reddit)
http://boards.polycount.net (art)
http://cgtalk.com (art)
http://game-artist.net (art)
http://gamedev.net (programming)
http://gamasutra.com (game development)