So I want to put a live well in my little 14ft boat.  I'm going to go with the cooler for a livewell.  Now that I have the water holder,  what else do I need and how does it all go together?  

And yes it is possible to be this dumb on the subject....I'm living proof! ;D

it really depends on what you want it to do.  Coolers work well because they help keep the temp constant.  If you want a pump in system, you'll need a pump somewhere through the hull (I put mine on the transom) and some plumbing from the pump to the cooler.  and since it's electric, you'll need a power source.  You can forego this and use a bucket, but you'll have to have a way to empty the cooler.  If you have a recirc pump, you install that inside the cooler, and there are ways to hook these up so that they will pump out water in the cooler also using a diverter valve.  I got all the stuff to do this at BPS.  My boat has all this stuff and a plug in the bottom of the boat just in case.  I got a small switch panel and run all electric stuff from it, except the T/M, which just has a big fuse.   You could mount it many places in your boat, but mine is in the side panel I made and covered with carpet.

Good luck.

I used a cooler on a boat and didn't find it very satisfactory. If I was going to release the fish I did it as I caught them and if I was taking a few home to eat I just put them on some ice in the cooler.

I'm looking to use the livewell for tournaments.  So I'd like to set it up so the water is recirculating and stuff.  That would be the only time I use it.  I know I'll have to have a battery for it and that's not a problbem because my boat is an electric boat anyway.  I don't have a problem running a second battery for just the livewell.

Does anyone know of a site that has a "HOW TO" secton on building a livewell?

Check out this website, It's not for coolers but just substitute the tank.  http://www.flow-rite.com/marine/e tank.