Hi Claire
Somerset Studio has been around for several years now. It's a very slick mag. full of interesting topics on varied subject matter. Their main focus seems to be on the rubber stamping industry with small parts on bookmaking, calligraphy and surface treatments.
I used to subscribe to this mag. but after a few years I quickly got tired of the same kind of formatting and let it lapse. There is far too much advertising and not enough "how to do" things. I do think they are trying to appease the crafter at large with snippets of everything.

My favorite resources for bookmaking is the bookstores, where I buy my own how-to-bind books. There are many to chose from these days.
A subscription that I do like is Tabellae Ansatae, which has far more interesting topics on bookmaking than Someset Studio.

margaret