Click the 'my folder' link above this message.
Your folder is where you add everything and anything. From here, you can upload images, writings, podcasts (soon...), items for trade, announcements, and more. Once you add & publish your stuff here, it will show up throughout the site wherever it should.
You should see a console view of recent things you've created, recent comments, and images. You can also see tab links that will show you everything in your folder and some more help info.
Don't see it? Click the 'display' pulldown (should be just to the left of this message) and select 'my home page.'