It's normal to freak out a little when you start out with these things. Just take your time, work on your orientation control first, and keep it low for a while until you can control it with ease, no matter which way it's facing. Once you feel comfortable with that, I'd flip over to atti mode, and get used to that mode as well, as it can be very important to know, since you might lose satellites one day and it'll automatically go into atti mode, so if you're up high, you'll know how to control it and safely bring it back in. Don't worry about manual mode for now unless you just feel like crashing the phantom. Failsafe is another thing to test out before any high altitude flights or long range flights. If you don't feel comfortable with turning off your controller, you can set failsafe to your third position on the s1 (gps/atti) switch. Becoming a good phantom pilot simply takes a lot of practice, and once you're good at flying, you should fly some more, and throw in a challenge here and there, like try to land on small areas, fly through tight spots, and if you're flying fpv, try to focus on a point, and fly around it while keeping it in frame and centered the best you can.