What me at all sincerity but then missing was more about the music. Just like Slash describes it here, the music was a byproduct of his excessive life. He who moves the feeling the guitar before the virtuosity itself are buttoned something here. Maybe it was not possible for him to write about it more, and perhaps the music was actually passing. I would just like to read more. Because after a while you fatigued a little when excesses are part of everyday life.
In addition, I found revealing that Slash in conditions that were close to him, especially in detail his motives justified (sometimes too detailed) to his actions succinctly "so am I just" do to some other time. But that's only human - and thus sympathetic again.
Ultimately, a highly recommended book to read necessarily in English. Only the music was a bit too short to me.