The classes I'm taking at the hospital have been SUPER helpful! I had thought I would end up having an epidural but after two classes (and I still have two more) I feel much more confident in my ability to cope without meds.
We practiced breathing techniques, deep breath in through the nose and out through the mouth. Or as contractions get more intense shallower breaths in and out through the mouth (but not so fast that you feel lightheaded).
We have also practiced different positions during labor. Will you be using a birthing ball? Sitting on one and leaning over onto a low counter or a larger ball is nice, especially if you have your partner rub your back. Leaning forward is better than leaning backward so baby doesn't try to turn posterior.
They also recommend having something to focus on, like an ultrasound picture or sentimental item. It helps to keep your mind off the intensity and have your "eye on the prize," you know?
Those have been the most helpful tips for me. The bath/shower is a great option too. The room I'll be delivering in has a tub with jets and a removable shower head for massage, I plan on using it if I need to!
Are you able to do a tour of the maternity ward (if you haven't already)? That way you'll have a lay of the land and know what is available to you (tub size, birthing balls, bed positions, etc).
Good luck, I'm sure you'll do great!