Here are the links to all the fmSMS videos:
Introduction to fmSMS
Trial Version Setup
Creating an Account
Sending an SMS to a single Contact
Sending an SMS to a group of Contacts
Message Delivery Delay Explained
Working with Templates and Merge Fields
Message Status Updates/Delivery Receipts
Sender IDs Explained
2 Way Messaging Demo
fmSMS and FileMaker Go
fmSMS and FileMaker WebDirect
Chat View Demonstration