We were introduced to these materials many years ago in a small group study and then again a few years later when we were able to attend a live event. This time, however, we decided to buy the DVD and workbook and go through it at our own pace. This allowed us to skip past the topics we felt comfortable with and take more time on the topics as needed.
There are a few marriage resources that we have found helpful over the years and this one certainly deserves a top spot. We like to alternate between various resources, including the excellent Love & Respect conference series among others.
I cannot recommend highly enough the value of taking a few days away with your spouse to focus on your marriage. And for those who want to know what the Scriptures have to say about this topic, I can unreservedly recommend these materials.
Disclaimer: I have no connection to these materials and receive no compensation for my recommendation. I'm simply happy to recommend what works for me.