was a bit sceptical but when i opened itt up wow the wealth of information in it was great. its basic, direct, tells where, when, whos, whys and whats. it in basic english so you understand everything that is put down no fancy jargon that you cannot get your head round. you read it you remmeber it. las book i had i was left wondering what some of it meant took me a while to understand some but this got it straight away. helped me in my assignments from moment i clicked onto the downloads well worth having