Beginner's first quad

This tool will help you get setup properly: How to methodically configure and tune any ArduCopter

Set:
ARMING_CHECKS,1

The GPS doesn’t have position yet so that will be part of the problem. Enable the geofence will prevent take-off before that is setup. Make sure you set up all your failsafes before you try to fly. These initial tests are when you need them the most.

I question if that frame is really going to be stiff enough. especially with that camera hanging out in the front. That will cause some big issues in tuning.