Do you have an instruction manual for members. Not the getting started guide or the admin manual.
Currently no. We are still in the process of migrating DNN Fusion's customers and should be able address many question like this soon.
Also, is there a way for me to add a module on My Profile to show their message notification.
Currently there is no Profile module to add for messaging notification. We will take this into consideration for future releases. You can currently use the messages notifier module on the same page as the Profile module.
Also, when members try to access thier messages, it says you have no access.
I believe you are referring to the outbox messages. We are aware of this and have a fix in place for the next release.