I'm about three-quarters the way through and a few things stand out.

The first is Wenner comes off as quite pretentious in his autobiography and he takes a lot of credit for many, many things.  There is also quite a bit of name-dropping, but that really goes with his world.  I know it is difficult for people like this to write a truly humble accounting of their life and chronicle it in a down-to-earth way and I get that. While I don't think Wenner is trying to get the reader to feel sorry for himself, but to me, the tone comes off often as a sort of bragging.

Another thing I come away with is sadness for the passing of how things used to be and what they have turned into.  All the way from music development, releasing, coverage and the de-evolution of the culture surrounding the "counter-culture." 

Another thing that is sad to me is of the lost world of things like Rolling Stone.  In reading the book, the recollection of how big Rolling Stone used to be to what it is now is sad.  What I mean is, Wenner writes how in its heyday, RS and his other magazine US employed five hundred people and covered so much more than it does today (hell, the magazine no longer has a Letters page or regular editor's note and barely does album reviews).

I am very curious to read how he deals with the demise of RS.