Learn how to build a photo gallery with Drupal 7 core's image modules + Views. You will learn how to create a new photo gallery content type and configure a view to display your pictures.
Thanks for the tutorial. It was a little fast, but there's a pause button, so I have it set up just as you do, but for some reason when I click on the thumbnail, the image opens in a window as opposed to the shadowbox. I have/had shadowbox selected from the beginning, but I did note that you changed it to hidden when you later went back to structure - content types - manage display (@14:15).
In either case, the shadowbox never worked properly for me.