Kofax just published a series of Kofax Express videos on YouTube.
There are 6 short quick learn videos available:
Kofax Express: Quick Overview
Kofax Express: FolderScan
Kofax Express: Using Bar Codes
Kofax Express: Using Zonal Recognition
Kofax Express: Indexing using Database Lookup
Kofax Express: Export to Folder
If you are new to Kofax Express, watching the videos is probably the fastest way to get up to speed with the software.