Amoungst the marines By Steven Preece would be a good bet then. Hes a member of this site aswel and its basically about his expiriences during training and joining a unit. Im getting it for christmas but my mate said it was a fantastic read.
I would definetly recommend 'Amongst The Marines', finished it in a few days after buying it. Couldn't put it down.
I wasn't to keen on 'Commando' by Chris Terrill, I literally had to force my way through it, took me about 4 weeks to read it. Don't know weather it was because I knew what was going to happen after watching 'Commando:On The Frontline'.