Hiya. Welcome to the forum. As has already been said, you don't have to actually do anything. Just be aware that there are people here in the same boat as you who are always around to give you any help and advice you may need, and plenty of 'ears' if you just fancy a good moan or rant.
In the meantime, just have a read of the topics that interested you. Before long, you'll feel like joining in more.
xx