S~C150~I
When I was learning to fly - many years ago - I was shown a very simple method of using the CRP1 by an ex-RAF Meteor pilot. This wasn't the way that was in the handbook (which came with the computer) but it works and works well enough for me.
A few years ago, a friend who was learning to fly in foreign climes emailed to say he was having problems with the computer. I put together a quick guide - with digital photos - and emailed it back. Problem over!
I probably still have the guide but - due to the photos, it isn't small. So, if you have broadband (or don't mind a long d/l) PM me with your email and I'll send it to you.
Regards
P