Maintenence = keep your warranty card
as for the fittings, this might be kind of obvoius. look at them. Do they have threads? Is one male and ones female? bring it in to a hardware store. tell them you need to get fittings for this with (insert hose ID size here) hose barbs on the end.
What size of tubing are you going to use?
If you're using 3/8ths tubing, get 3/8ths hose barbs. if your using 1/2 inch tubing, get 1/2inch hose barbs.