how to set up read receipts on email
If you're using webmail, in the Compose window click on Options and choose Request read receipt.
Do I get a message back once its read or how do I tell if they read it
It's entirely up to the recipient on how they handle this. If they acknowledge the receipt you should be notified via email. However, a lot of people will totally ignore it, so then you would never know if they got it and read it.