Hi Ref 1,
i've recently completed the course and the best advice I can give you is - to enjoy it. I met loads of great people (young, old, young boys and girls, men and women), had a great time and learnt absolutely loads. For me, i was surprised how much i didn't know, and now i'm looking forward to refereeing my first game. It seems a great community where everyone is ready to give you good advice on what to try out and look out for.