Back a couple of years I read NB's yellow jumper book, and wasn't impressed. The tone annoyed me; I didn't learn much. Now that I've watched a few more tdf's I should probably re-read it. It probably wasn't aimed at someone like me who hadn't spent 10 years watching ITV.
However, I've just read "On the road bike" - which I somehow totally missed last year when it came out - and really, really enjoyed it. It really captures something about British cycling. It is also much less jokey (although still funny). It is rather sweetly honest about his growing love for cycling - and his admiration for the folk he meets - and that works much better for me than the blokey jokey TdF stuff. He's also very honest about how the pros deal with him, and pretty unflinching about the folk he interviews. Really quite powerful in an understated way.
I've not read any reviews of it (may go do that now), but I think it is a very nicely formed book. It perhaps helps that I agree with his assessment of Froome, and that his take on Cavendish rings true.
Oh, and Chris Boardman is the secret hero of the book.
Another good bit - Boulting also reveals a bit of interest in campaigning issues.
I'm also partway through his short 'how cav won the green jersey' and while I'm enjoying it, it's much more in the mode of the yellow jumper book (albeit a somewhat more mature style).