You are free to download and share photos so long as you do not do it for profit. To download the full size uncompressed photo click the photo thumbnail so only the one photo is showing on your screen.
Click the icon in the upper right corner of your screen, then click the icon with a down pointing arrow. The photo will download to your device.
Main Gallery
Past year's photos are in albums sets by year. For example, 2006 photos are in "2006 Photos"