I would strongly recommend this book, and not just for stepmums, but for the husbands or partners in a step-family too. The core themes, of the importance of communication, patience, understanding are relevant to both sexes. And the core problems, such as not being sure what your role is, feeling resentful, the ex causing issues, are also something that both adults in the relationship could think about.
The book was easy to read, in that it was free from gobbledygook type jargon. It was inspiring however, and thought provoking. It was organised and structured in its approach, but most importantly it came up with ways of dealing with the problems of being a step-mum that are positive and aimed at reducing animosity long term. It does not advocate being a doormat, but the approach does remind us that to be truly happy we do need to give and take, and let time tell, and be patient and kind -not constantly trying to assert our rights and territory. Often in the book - and this is a good thing - the author does not preach to the reader what the correct answer to a problem is (such as who disciplines the children?), but reminds us that whatever it may be will come from the step parent and biological parent communicating honestly about the problem together, agreeing a solution and applying it consistently.
I read the book cover to cover, but have already delved into it from time to time to read back over some passages that I found particularly helpful, and advised my partner to read it too.