I've had 3 pregnancies and 4 children (last pregnancy was twins), and I took classes each time. The first was the typical hospital class of the day, 12 years ago, in a very conservative city. I wish I had learned about doulas in that class. The second was an ICEA (Int'l Childbirth Education Assn) class, the third was Birthing From Within. I personally thought the breathing patterns in the first 2 classes were not useful, but as a doula, I can say that they may or may not be helpful for the mom, but can be great for the dad or other birth partner for assisting the mom, giving them something meaningful to do. Some moms need them to calm down, distract, and stay on top of the contractions.
The best thing I learned from the ICEA classes was all the different alternatives available during labor and birth, and to be assertive (or have someone with me who is). One of ICEA's 'mottos' is "Freedom of choice based on knowledge of alternatives". You can ask to be monitored intermittently, as long as everything appears okay, instead of staying in bed being monitored constantly. You can ask to 'wait and see', instead of accepting an intervention simply because it's what's usually done. You can choose different pushing positions, rather that lying flat on your back or in a semi-sitting position. You can choose to labor or deliver in water instead of staying dry. You can vocalize instead of trying to remain quiet. You get the picture.:)
The best thing I learned in Birthing From Within, which I still use now (my twins are now 7), is facing fears. We were asked "What is the worst thing that could happen during your labor and/or birth?" Once we answered that question, we were then asked "What will you do if that happens?" It helped me to realize that even if horrible things happen, I CAN handle them, painful as it may be.
Great question!!
K.,
Mom to 4, Birth Junkie, and Scrapbooker, too:)