I worked through the steps, the first time, gently guided by my sponsor from my CoDA group, and these steps continue to be the foundation of my recovery even today.
There are workbooks that help us understand what the steps mean, one that I found helpful was Melody Beattie's Twelve Steps for Codependents.
Although they can be done on our own, I highly recommend finding a home group, choosing a sponsor and working the steps with help from them.
Hugs