Answered Just became member today. :)

As Tyo said, you already have a good source of income with your woodcutting skill. As a member you're occasionally going to see bird nests fall out of trees, which you can pick up for extra cash. To make more money woodcutting, buy a strung rabbit foot to improve your chance at getting a nest, and buy a rune hatchet if you do not already have one.

Since you have a little money to get started, you could also make some money buying items from shops and selling them on the GE. Feathers and vials of water are always good. Fire, earth, and death runes are good at the moment. Any of those items are available in several shops all over the place, and the stock fills up after 24 hours so you can go back once a day if you want. http://www.tip.it/runescape/?rs2shops is a shop database I use. You can search for an item and get a find all the shops that sell that item, along with their locations and how many are stocked.