Click on arrows to navigate forward and back.

Click on any element (photo or text) to enlarge. Right-click on image or text and then use browser's "open new tab" or "open new window" commands to have more control over how pages are displayed.

Also, each enlargement page has a "back to full page" button, so you don't have to use extra tabs or windows if you'd rather not.

That's if you're on a computer. On a smart phone? You're on your own.