On our Macbooks F3 is the key that activates Expose which is a program that shows you all of your open windows. You can then click on the one you want to go to. If you place 4 fingers on the mousepad and then slide them down, your open windows go to the side and you can see your desktop.
You can set up your GAC email on your itouch. Go to "Settings".Tap on "Mail." Tap "Add Account." Choose "Microsoft Exchange." Type in your email address next to Email. Then use the following:
Server: ragged.greateratlantachristian.org
Domain: gacsinside
Username: your username (mine is juliaos not josteen)
Password: your email password (yes, the long one)
Description: this can be your email address
Use SSL: make sure this is on
Turn Sync on for Mail, Contacts and Calendars