Go to the hub, click the "edit" button, and then you can edit and arrange the capsules within the hub. For example, to add text, hit "edit" on the text capsule and you'll be able to type into the box. Then hit "save" on the capsule. To add a photo, hit "edit" on the photo capsule and upload an image from your computer or the web (make sure you are not violating any copyrights). You can then move these capsules around using the arrow buttons, or add more capsules from the choices on the right-hand side of the screen. When you're satisfied, save & publish the hub!