The one I have doesn't have a user manual with it.
The 'user manual' is the bloke who gave you the CRP-5!
Seriously, I can't find it, but they give you a little book with the thing. It's useless. Best to follow through the examples in your BGS manuals. If you still don't understand, give me a call when Kinky isn't here, or bring it to be pub and we can go through a few problems together.
It's easy when you get the hang of it! Serious! So useful that Bas at BGS "has one in every room of his house", apparently.