To help get you started contributing, we've created a tips for new contributors page, full of helpful links about policies and guidelines and style, as well as some important information on copyleft and basic stuff like how to edit a page. If you need help, check out Help, or post a message in the travellers' pub. New users are also welcome to post any questions or concerns to the arrivals lounge. If you are familiar with Wikipedia, take a look over some of the differences here.
Thanks a lot for jumping right in and helping out!
All the best,