I finally finished this book the other night and read the Alien Resurrection section. A few errors in here which I've passed along. But I oddly enjoyed reading it. I hadn't been in a rush to read the last section because well...Resurrection. However, I found myself enjoying it and getting along with the information. Of all of the films AR is probably the way I retain the least information of but I'm very tempted to rewatch the special features on the Anthology now.
It does feel like Mark Salisbury put less effort into this section though - only a page looking at the design for the Alien, the errors. Felt very phoned in.
Over all, I enjoyed the book. It was nothing ground breaking, nothing that you couldn't get from Charles' wonderful documentaries. But if you'd rather have read than watched, then there's nothing wrong with the book. It's certainly an attractive package but nothing worth bending over for.