Here are some helpful webistes for ArcPad, ArcMobile and Trimble Positions “Resources and Videos”

ArcPad Resources:

ArcPad 10 Quick Start Guide

ArcPad 10 Help

ArcPad Resources

ArcPad and ArcMobile videos:

ArcPad 10 how to videos

Esri learning center has a 3 hour ArcPad 10 video

ArcMobile High Accuracy with Trimble Positions

ArcMobile videos via ArcGIS Resource Center

ArcPad and ArcMobile Blogs:

ArcPad Team Blog

Esri Mobile GISBlog for ArcPad and ArcMobile

ArcMobile Resources:

ArcMobile for Windows Mobile Help

ArcMobile Resource Center

Trimble’s Position Websites:

Trimble Positions Tech Support website

Trimble Positions Documentation

Trimble Positions Downloads

Trimble Positions Blog