Viv my reply is going to be different. You have just taken the training wheels off your camera by turning off "AUTO", thing is, can you ride your bicycle (camera) to its max, I do not think so. Until you can use, and push that bike (camera) to the max, know what it will do in ever instance, under ever condition, once you know that, and can not push it further that is when you can get a newer one. One other thing it you just got off "AUTO", then what format have you been shooting in, j-peg or raw, if it has been j-pegs step up to raw. Baby steps, first baby steps.
Cheers: Allan