The top two galleries are for saving images to print. Please do not share full-size images online. The bottom two galleries hold web-sharing images.
Each gallery has a password to enter. Once inside the gallery, you will be able to download the images you want with a download button. Save these images to your computer and back them up. You can do that same with the web galleries. (Download and save for sharing online.)
If you have any questions, please let me know.