Welcome to GG&J
The single most important piece of advice I can give you is know your niche. The better you know, and understand it, the better you will be able to sell it.
I don't know if you are aware of it, but GG&J also has an irc chat room.
To connect using your favorite IRC client, simply use the following information:
irc.greenguysboard.com
#greenguyandjim
port: 6667
Or, just use our Java Chat
Here