I have a personal pet project I'd like to start on, targeted at windows mobile 6. I've never done win mobile dev and would like to know what resources are out there, good tools to use, perhaps a jump start tutorial, as well as any gotchas I might want to keep in mind when developing for the platform?
If you have C# background jumping to the windows mobile development is quite easy. Of course there are lot of differences but you will get hang of it.
Some gotchas:
Get familiar with .NET CF memory management and how garbage collector works on mobile devices. Steven Pratschner's .Net CF WebLog. Steve also have's nice tutorials how to use RPM (Remote Performance Manager) tool to get rid of memory leaks etc.
Also some things are done through pinvoking librarys like core.dll so browse to P/Invoke.net and take a look for methods under Smart Device Functions.
And finally few blogs
Rob Tiffany's Windows Mobile Accelerator
Mobile Development by Raffaele Limosani
Edit: Oh there seems to be similar question with great answers @ Windows Mobile Development - Where to begin?