If you are a beginner, so NASA is a right for you.It's always a good idea to get a cheap, robust ready to fly mini copters that offer fantastic GPS stability and assistance flying modes. You can also read these for more information: http://bestdroneforthejob.com/
Yes, I think toy quad camera work for FPV. Different types of FPV are available in the market. The first thing that you considered is choosing an FPV.When selecting FPV then fix toy quad camera carefully.
In my opinion, drone play a significant role in future. Drones aren't changing new wars drastically, but they could reshape the aerial battlefields of the future. Drone are improving day by day, and they set an example for others.