Hi son, just going to type up my revision notes for my exam on Wenesday, I know I should not say it but I am feelling pretty confident about it it is really a lot to do with common sense and practical experience which us older ones have so I am not going to worry too much about it. Mind you they say if you are too confident that you will have a fall, wo knows, we shall see when I get my marks. Need to go and start, love you loads, mum xxxxxxxxxxxxxxxxxxxxx