Re: beginners guide - please help me?

Lots of good info here:
http://www.mapki.com/
and here:
http://www.econym.demon.co.uk/googlemaps/

But in short, to change your location from Palo Alto you need to feed
your coordinates int this line:
map.centerAndZoom(new GPoint(-122.1419, 37.4419), 4);
It's longitude first, then latitude (and finally zoom level).