I have the GF book too. i'm a big fan, but it is complicated! However as Mel says the main messages are very simple, they are just not clearly summarised on page 1 or anything, since you wouldnt have to buy the book then!!!
The thing it helped me most with was being confident that I was feeding them enough, since I always had midwives/HVs saying 'you have to feed them every 1-2 hours...' (the 'or they will DIE!!!' is implied by the dot dot dot) which I knew was bolx but being a first-timer it used to shake me up. Complete tripe. I would've been getting up before I went to bed! More importantly, I wouldnt have had a chance in hell of keeping myself fed. Or sane. It gave me the confidence I needed to make the dts wait for feeding (which was definitely better for them, as they fed longer and got to the hind milk) and also to not assume that every cry is for food. I know parents of singletons who are still feeding 15 times a day and thru the night because every time their baby makes a noise they shove a boob in. (sorry, I have NO right/reason to make that judgement, every baby is different etc, but you know what i mean!)
Also things like dummies, she seems to have a very practical attitude to things that will 'get you through' which I wasnt expecting at all.
I am completely unable to stick to the daytime sleeping/waking times though. I just cannot keep the girls awake during the day! They have way more sleep than G recommends. But I think they just need it - they still sleep through the night.
I wouldnt be fazed by the long lists of 'what to do every 3.5 minutes over a 24-hour period', obviously her experience by definition is in families who have a nanny! So, someone whose job it is to look after the dts all day, but isnt recovering from pregnancy and birth herself, doesnt have other urgent things to do, and who probably likes some 'order' in her working day. i think its unrealistic for the actual Mum to follow, especially if like me you dont like taking orders but it does give you something to aim towards, and ideas as to what might go wrong and how to fix it.