Hi! Welcome to Listia! I love it!! The best advice I have for You is to go to your My Listia page and scroll down all the way to the bottom and click on How it Works and then Listia Assurance. This will give you the most information. Basically, You can earn credits by Listing items, Watching videos, Doing surveys or by purchasing them from Listia. Oh also you can click on the Get Credits Link at the top of the page. I hope this is helpful for You. Good Luck! : D