Welcome Simon,
We were all new at one time and slowly built our knowledge by listening and sharing experiences. This is a great group of people with a vast network of knowledge and many of them are more than willing to share if you will take the time to listen to what they are saying.
Never sell yourself short, I am sure that even as a newbie you still may have information valuable to some members of the group. Put yourself out there and become engaged in the conversations and you might be surprised not only how much information you can pick up from the members, but also what you have to offer.
Welcome and good luck on your Internet Marketing journey, it is a bumpy but very fun road to travel.