I recently previewed a series of books as a potential texts to use with step families in crisis. The least informative of these books was "Happily Remarried" by David and Lisa Frisbie. Although the book was inherently readable and certainly got a few good points across--it was completely inadequate to deal with the complexities many step families face.
If your step family is dealing with serious issues I recommend "Smart Step Family" by Ron Deal or "Step Coupling" by Susan Wisdom and Jennifer Green. You will find either of these books to be far more comprehensive and useful, although each one has its own strengths.
The "Smart Step Family" is a book written from a strong Christian perspective and as such provides significant spiritual and biblical background for people of faith. "Step Coupling" approaches the step family more from a secular counseling context and therefore does not delve much into the moral or ethical aspects of the various issues facing step families.
Indeed, when discussing a foundational issue like honesty or dishonesty, the "Step Coupling" book explicitly states that neither value is right or wrong. This was almost a deal-breaker for me. I suspect that even most non-religious people would struggle with the idea that all behavior is value neutral.
Nevertheless, the book largely arrives at the same conclusions as its Christian counterpart--albeit from a different perspective.
All in all, I think that any step family going through internal or external struggles would be well served to read both books. Both bring unique and significant insights into the challenges that step families face.
The "Step Coupling" book is somewhat more earthy and easy to read, being filled with concrete examples from actual step families.
The "Smart Step Family" book feels a little more detached, but still does a very good job of communicating the key issues that step families need to address, while acknowledging the spiritual needs of those involved and how to address them.
In this sense, it is perhaps the deeper of the two. Either book will do a good job in helping the step family better understand itself and move toward a more fulfilling future together.
The Smart Stepfamily: Seven Steps to a Healthy Family
Leading stepfamily expert Ron Deal offers a revised and expanded edition of his signature resource, which addresses key concerns and practical issues facing every stepfamily.
The Smart Stepfamily: Seven Steps to a Healthy Family: Ron L. Deal, Gary Chapman: 9780764212062: Amazon.com: Books