M_Boats: New M-17 owner Questions

We just became M-17 (1986) owners.I'm trying to work out all the newness a sailboat rigged buy someone else can bring. Most seems to be straight forward but I have some Questions. When on the mooring do you Keep the weighted centerboard up or down? How do I find out my correct sail number? and Any input on the rigging of the boom. The port side has fairleads on a 45 deg. angle the length of the boom aprox 5 ea. and small finger cleats on the starboard.I don't see how the outhaul attaches. If any one has a photo of how to rig the boom that would be much help. Thank you in advance Briant M-17