Once you have created an account and signed in to Photoshop Express, this is what you'll see. From the opening screen, you can go directly to your library from the "My Photos" button, to your albums with the "My Gallery" button, or click "Browse" to explore other users' public albums. Of course, you will need to upload photos first, and that option is clearly labeled as well.
Notice the button in the far right corner at the top of the screen. Clicking this button will expand the workspace to fill your screen; a very nice touch. You simply click the button again or press ESC to exit full screen mode.
Photoshop Express gives you 2 GB of free online storage for your photos. Your photos are not resized or recompressed for online storage and the maximum upload size per file is 10 MB. Only JPEG files are accepted for now, but Adobe is seeking feedback for which formats to accept in the future. As you can see, the Feedback link is always accessible at the top of the page.