A very good camera. Excellent price-point too. You can't really beat the price-to-performance.
Do take advantage of your "Fn" button. If you set up the camera correctly, you can modify your exposure triangle on the fly really easily with just the one selector wheel that you get (hold to Fn while using the wheel to modify one thing, ie. shutter speed, hold down a different button while using the wheel to modify another, say ISO, and then use the wheel without holding the button down to modify say aperture... or any combination of the aforementioned three things). I say this because some reviews will tell you that you have to go into the menu system to modify these things, and they will claim that slows the camera down, and that's not true: the D3300 is a very capable camera.