You won't be able to "prove" either position because the events happened in the past. But you can gather a lot of information and explain why people think it's a hoax and why their arguments fail under examination. All that stuff is available here and at another forum (appolohoax.com) which unfortunately lost a bunch of its archives. You may also want to look at http://www.redzero.demon.co.uk/moonhoax/ which has a pretty concise summary of the arguments and counterarguments. Can't get your questions answered there, though.
Another great site operated by one of the members here is:
http://www.clavius.org
Everything you ever wanted to know is on that site.