For the best experience when receiving someones location, cache your local area in Google Maps so you can get a better Map's image when you view other people's locations. For instructions, select the Three Dots -> Instructions.
This new feature allows you to request other people using this apps location. You can request other people's location by selecting their contact and pressing the "Request" button. If the recipient has you on their "Automated Reply" List, they will automatically reply with their location. To add people to the list, select the Three Dots -> Automated Reply and then add your trusted contacts.