Learning Curve for the Prius V

Hello everyone I am new to the forum. We have been a Toyota family for years, three Corolla and a Sienna we just purchased a new Prius V. It's a new learning experience with voice controls. It seems our navigation system needs updated, many of the streets don't show up compared to our old GPS system. I have been thru the manual, but can't seem to find any information on updating it. Any tips would be helpful.

On tips I will give one.
How many of you have your home address programed into your system? If your car gets stolen they know your not home and where to go for easy pickings. I live near the local sheriffs department that's the address I used for my home. I suggest you use a neighbor or a local business close by, may save you a lot of headaches.