I've read the book a couple of times an it is a classic. As Arch says, nothing much happens. It is a book which describes village and small town life in the 1880s/90s. Small events such as a the visits of a crockery salesman and a travelling German band are described, but there are no sitcom, soap opera style stories as shown on the TV programme. A short, interesting single page description of the latest cycling craze is included. I only watched because I was intrigued as to how the BBC would screen a book which has no real storylines, being a work of social history and not a novel. Now I know. The BBC has simply made up plots and characters which do not appear in the book at all. As a vehicle for showing nice dresses to the costume drama fans on a Sunday night I suppose it is OK, but I found the storylines contrived and clumsy. I'd have preferred a documentary approach to the book which is packed full of intersting detail of life at that time. A dramatisation seems pointless because there is nothing to dramatise really.
I saw an interview on Richard and Judy with 3 of the stars of the programme. None of them had read the book and said that a single copy was passed round the caravans on set during filming, furthering my suspicion that the show is just an excuse to parade the pretty dresses.