Hi folks

Need a hand here. The one really gaping hole in my SFOS N4 device is the lack of working "turn-by-turn" navigation app (replacement for Google Maps app). I've read over and over that modRana supports "turn-by-turn" navigation (I presume that's GPS driven) but I cannot for the life of me figure out even how to find my current location using the app.

Could someone please point me in the direction of a guide or something that could help me to
1) use modRana and GPS to determine my current location
2) produce a route from that current location to a different location
3) navigate in real time

Any help is greatly appreciated. Thank you!
Jon