The resulting node edit form is far too complex for most users, it is asking for information it doesn't need (the body, comments etc.) and for flickr information which is awkward to obtain (the set id) and to cap all of that the set id has to be entered twice.
In part 1 I set out the problem and the aim. This post will cover setting up the modules required to display a gallery. The custom coding needed to make creating galleries a breeze comes in part 3.