Here is a great set of sample code and a VS project which steps you through some cool ideas around how to create you own cool apps in the consumer space while using some of the cooler features of Windows Mobile devices (like location, Outlook Mobile, and Virtual Earth). You can use this as a great education...

I know that most of you have already seen this, but if you haven't, it is DEFINITELY worth taking a look at. Chris decided to build 30 Windows Mobile apps in 30 days...and a LOT of these apps are really useful!  Go ahead, take a look ! My favorite, I think, is the Mobile Capture app (day 5). ...

  To go along with Reed's post down below, a common question that we both get is simply: Where do I start? So, several months ago, Reed and I created this set of links that I affectionately call the 'Welcome to Windows Mobile Development'.  I have this in boiler plate, which you see below....