Keith,
Sounds like you had a great day! Me too! I can't believe the GP mount isn't steep enough, you must be going super fast. The FPV camera may need to be adjusted but I'm surprised you're looking at grass on your GoPro. The OSD should have shown up automatically. You will need to download MSOSD to change settings and enable things. You won't get speed or altitude. You're just going to get battery info flight modes, throttle percentage, flight time, etc. there is a separate mini USB port on the lower left side of your bird when looking at it from the back, that's for the VTX and OSD. You will access it using MSOSD. You should be able to find i9nfo as others have said, on YT.
Jerry