I’ve downloaded the most recent update of Google Maps 2.0 which comes with a new feature “MY LOCATION”. This enables you to find out where you are, based on your proximity to the closest mobile phone tower currently . In Australia, you can only get an approximate location based on the phone tower radius of 1.7km (from what I worked out). When you install this from www.google.com/gmm, make sure you install to your phone memory as I had problems installing it to my memory card.
Google maps on your phone allows you to get directions from one location to another. If you searched for example, Los Angeles Airport, you can then press the main key on your phone to get options to find out how to get to/from Los Angeles Airport. An example below shows a person going from Milson's Point to Sydney Airport. The map first shows you a summary of the journey, then you can see the journey on the map, pressing "3" every time you get to a significant turning point in the journey to find out what to do next.
The searches I think have improved on this new version of Google Maps. If you look up “restaurants” you can toggle between the results by pressing 4 and 6. Zoom in on the map with 3 and zoom out with 1. Pressing 0 will get you to your Google Maps' "my location".