May 1, 2012 - 11:00 AM
You're most welcome! As for your questions:
a) The start date you're asked for is the first day that you can use as the first free travel day. However, you can decide to start using your pass later as there are 4 blank areas on the pass to fill out your free travel days. The last day you can use your pass is exactly one month after the start date you filled out while ordering.
b) It will be one pass for the 3 of you, as it's a saver pass that requires you to travel together.