The above link will lead you to a recording of a seminar led by Tim and Kathy Keller. Presently, it is free to download from the Redeemer Presbyterian Church’s resource website.
If I could only recommend one resource to couples for marriage enrichment or marriage preparation, this would be the one. It is 75 minutes long. Scottie and I have benefited greatly from listening to and applying the teaching found here. I hope you’ll do the same.