I've just finished reading this for the first time, and despite having read SO many books about you-know-who, I enjoyed it and found it was like seeing a familiar film from a different camera angle. Everyone who was 'there' has a different viewpoint, just like different witnesses to an accident. I think those of us who weren't there need to fill in the gaps as best we can, and one way is reading books like this.
I thought he stretched some things a little (was he really that well acquainted with them before they were who they became? cos if he knew Paul as well as he claims, he'd also know his brother which doesn't come across) and other parts I thought, hang on - he hasn't even mentioned that (I can't remember if he talks about Help at all for example). He's quite clear on Yoko, however, yes - quite clear, thank you!
I thought some quotes were used a bit misleadingly, so that if you read quickly and unquestioningly, you might take them to be things Beatles had said directly to Tony, but on closer inspection, turned out to be from famous interviews/other books! He's not alone in that, though. And there were other parts when he obviously was quoting from a personal conversation, which was nice.
Another thought that struck me was, he's an insider - where's Mal?? where's Neil?? Passing mentions, that's all.
On the whole, a good read. I may even have to buy it to add to my collection! I borrowed it from my local library, and it seems an ardent fan had been there before me - pencil comments in the margins!!! I love 'em, but am too chicken to put my own in.