Hi Memi,
welcome to the group, Dogboy has said most of the things i would normally write. Have a look at the rules and tips section (link at the top of the page) and as Dogboy suggested have a browse through the forums and find one or two or 15 that interest you and start posting in them you may also have to go through the security process if it is still used, but it is straightforward and as long as you have a webcam or some way of getting a digital photo to Moo you should be ok. This will help open most of the forums to you. In the meantime enjoy and have fun.