Kevin,
I fertilize weekly during the summer with miracle grow (I usually buy whatever home depot or lowes has for a store brand) along with my other trees. I water daily, some recommend that you need to let them dry out in between watering, but I have found that they prefer to stay moist, not soaking wet, but moist. Due to the amount of rain that Mobile, Al gets, we use a really fast draining soil mix, so it is impossible to over water, the downside is that watering every day (sometimes twice) is a must.
They get full morning sun until around 11am, dappled sunlight until about 4pm, then full sun again until dark.
I leave them out during the winter and only bring them in when we expect really cold weather, (for us that is 20's). I have left a few out all winter with no ill effects, they lose all of their leaves, but flush out again when it gets warm in spring. If you move them inside, they will drop their leaves anyway, they don't like to change locations very much.
Hope it helps,
John