attaching sails
For the mainsail: Although I don't own a 25, but have owned both a 29 and 38, the first thing to do is insert the battens into the batten pockets securely. I have sometimes forgotten to do this, but its no big deal. unfold the sail and grab the clew, and slide the foot of the sail into the boom from the mast going back, and secure it to the outhaul. There should be a ring or pin to secure the clew with at the end of the boom. Then attach the halyard and starting with the head or top of the sail, insert the slides or rope into the track and slowly raise the sail and insert each slider in one after the other. You should spray the mast track and slides with some Sailkote, which will make the sail easier to raise and lower. After the last slug is in the track, reinsert the base screw to hold the slugs in place. Make sure you tighten the outhaul, which pulls the foot of the sail out on the boom and your almost done. Once you figure out which line is for reefing the mainsail, grab the bitter end of that line near the end of the boom, slide it through the reefing cringle on the mainsail leach and tie it on to the other side of the boom, near the end of the boom. Finally, drop the sail and tie it back up. It helps to have Capt'n Morgan assist you before you start, and some cold beers after you're done. If you run into problems have some more Capt'n.
Assuming you have roller furling on your jib, you first need to roll the forestay and furler up most of the way to get the furling line around the drum before you attach the jib, then unroll the jib on the foredeck and attach the halyard, and also attach the tack of the jib to the base of the roller furler. Have some Capt'n (burp) and then have someone feed the luff into the forestay track while someone else slowly raises the halyard. You can either attach the jib sheets now, or you could have done it before you raised the sail. The jib sheets should also have been lead along the deck and back to the cockpit. With the roller furling, simply tie off the halyard. I dont know a damn thing about the centerboard, but the Captn MOrgan was good.