The Bradley classes really focus on having a partner in general to help you through labor and birth. I liked my classes, but they are very time intensive and if your husband isn't into it, it might not be terribly worth it. The main things I found helpful from the classes were the discussions of different positions and how they helped in pain management and proper positioning of the baby. Pain management techniques like massage, visualization, and warmth/cold were also pretty helpful. The main benefit of Bradley classes, in my particular case, was to create a kind of captive audience so my husband had to actually learn about the process. I learned most of what I needed to know from Ina May's Guide to Childbirth, The Dr. Sears Birth Book, and the Bradley readings. Reinforcing the techniques like low moaning and different positions in class was helpful, but I'm not sure it was necessary. I do think the videos helped my husband mentally prepare, though he admitted later that he had no idea how difficult labor and birth was going to be for him.
To echo the PP, water was super super helpful for me. I had a very difficult labor with back labor and very very slow progression. We thought I was in transition at home and I was only 2cm when I got to the hospital. It was really tough. I labored in the water at home when things got unbearable, which gave me enough energy to get to the hospital. Once there, I labored in the tub until I was fully dilated and ready to push. It was a lifesaver. I couldn't have done it without water. Since you're having a homebirth, you'll be able to be more flexible. The Birth Book by Sears has a little section on when to get into and out of the water to maximize both contractions and pain relief.
I think Ina May's Guide to Childbirth would be the most useful for you in your situation. And it's not New Agey at all, though there are pictures of women laboring naked. I don't know if that would make it a problem or not.