There are different ways to carb up the keg. Really depends on how fast you want it to be ready. I have gone from kegging to drinking a fully carbed glass in less than 48hrs. However, it's not ideal as you have some carbonic bite from the co2....but it's doable. As mentioned, read up on the different methods and as always, ask questions if you get confused. As for conditioning, your beer will continue to age and condition until it's gone. I have beers in my kegerator that are 2 months old that taste better and better each glass. Go to it and cheers!