Ed Dunhill have been running a series on web development on his blog. Recently he wrote a great post on Popfly to teach people how to create a custom input box. Ed’s summary of what the post is about is here:
I’ve written about Popfly before but have just talked about using the boxes that already exist for it. One can have a lot of fun and learn a lot from the existing Popfly boxes but I think for most programmers the real excitement is in creating ones own boxes. This is a nice way to start.