ok be ready for a bunch of advise, but hang on cause there are a lot of good people here who will get you going.

a few things

first they arent old enough for fruit. in a couple years they might flower in spring and then they might set fruit. the age at which they will is up to the tree itself. But from my experience 3-4 years is typical.

second I would keep them out at all times until the night time lows are getting close to low 50's or high 40's bringing them in and out a lot will stress them tremendously.

third check out the container forum or even read up here on the ideal soil to use and water habits. The dirt will compact and hold more water than you think and essentially drown the roots.