Sergeant - not sure you realise but the point being that it's illegal to use the VHF without the licence. miccheck... suggests about getting a certificate or piece of paper as being the reason to take the PB2 course - the piece of 'paper' is irrelevant - everyone 'passes' the course. Although for the VHF course the paper is important as it becomes your licence to operate a VHF.
So the point of the PB2 is to do the course and soak up what it teaches you about safety, tides, currents, colregs, handling, LJ's, anchoring etc to make you a more aware and safer boater especially as it sounds from some of your posts that you are new to boats. Yes, it's a basic course and you can learn some of it from a 'mate' or whatever but it's a great start to your boating life and for me at least who as a youngster spent many a summer driving the old man's ski boat in a sheltered bay in the med without any UK boat driving the PB2 was a real useful eye opener.
Take it or leave it but there are enough clueless ****** out there who don't know a kill cord from a kipper.