There are two ways and times you can pick pictures for your photo blog:

1. You can pick many-pictures-all-at-once when you are first creating a photo blog by using the "New PhotoBlog" command
2. Or you can insert photos one-at-a-time into an already existing photo blog

We recommend using the New PhotoBlog command whenever you are first creating a photo blog:

The New PhotoBlog command is a wizard style interface that walks you through the creation of a photo blog and lets you pick an unlimited number of photos all at once for your photo blog. See new photoblog command to learn more.

Whenever you are editing an already existing photo blog, you can then insert photos one-at-a-time by using the editor's "Insert Photo" command :

See how do I insert photos for details on how to use the insert a photo dialog.