A more comprehensive guide is now available: PyCon 2010 Tutorial. In particular, see the Creating a Simple Application section.
This is an example of some very basic (and very old, outdated?) code to get an app with a single form up and running in Dabo. (It actually brings up two forms. See the links above instead.)
import dabo
dabo.ui.loadUI("wx")
def main():
app = dabo.dApp()
app.setup()
# instantiate the form
form = dabo.ui.dForm(app.MainForm, Caption="Hello, Dabo users!")
# Add a text box
form.addObject(dabo.ui.dTextBox, "tbox")
form.tbox.Value = "Cool stuff!"
form.tbox.FontBold = True
# show the form
form.Show(True)
app.start()
if __name__ == '__main__':
main()
This sample can also be found in tutorial/basicForm.py (where is that file?).
So that was just a little program that shows how to get a UI to display.
A good next step is AppWizard. Figure on 30 min.
Then sit back and watch some Screencasts.