I used it with my third as I couldn't have a home birth like I had with my second. It helped to keep me calm & relaxed when I was being induced as I hate the over-medicalisation of birthing in hospital. When I was 2 mins away from an emergency c-section, OH said I looked completely oblivious to what was going on. I could hear & understand, I just concentrated in remaining in my deep state of relaxation.
You will need a good birth plan, a team that will actually read it, and an excellent 'gate-keeper' or birthing partner who will speak for you if need be. All sounds a bit hippy, OH wasn't convinced but it definitely worked for me. I didn't pay for a course either, got the cd & book off eBay! Can't remember the name! Hope you get the birthing experience you want.