This is a good tutorial to start with. Watch all of them actually, it's the best place to start. Then try a sample page.
http://www.vodahost.com/vodatalk/gra...-lightbox.html
You can make a text box and put your copy next to the photo. How to do that is in the tutorials too. If you get stuck, ask a specific question in the forum for the problem you have. Good luck.