This page is woefully short for a topic as important as a life raft. It is one of those expensive items which you hope is a waste of money and will never be used. I do have a packed "grab bag" attached to the raft and somewhere I've got an inventory list of the contents but that is about it.
On my list of boating courses to take is the MCA/RYA survival course which, among other things, practices deploying and entering a life raft - something that isn't easy to do in a swimming pool, let alone in the kind of troubled waters typically encountered when having to deploy a liferaft.