Scholantis (the company that developed My Site) has excellent documentation to help you with your projects:
Here are some other hand outs and links that have been created to help you:
The Quick and Easy Guide to Adding your Class to Scholantis
How to get students into their eporfolios and add content
Scholantis Software update notes – Find out the latest update Scholantis has done to help us
Instuctions for Parents/Guardians to get in to see their child’s portfolio
An Introduction to “My Site” with Instructions
Using Your Class Media Gallery