I can't remember a whole route just from looking at the map once. Also maps generally don't show whether streets are one way and things like that.

I just type the address into Google maps, or place a pin manually, then hit the start button. It'll tell me every step of the way. Keep right at the fork. In a hundred meters, turn left. Turn left. Take the second exit in the roundabout. Your destination is a hundred meters ahead on the right.

It's great and it works almost flawlessly. Even better if you have a passenger able to keep an eye on it for those times when it isn't flawless.