Google Maps and Yelp
Technical resourcesIn order to get familiar with Google Maps a good starting point for building maps applications can be found at the following: https://developers.google.com/maps/.
If you prefer watching videos instead of reading documentation here you go a nice introduction to Google APIs with examples and clarification about standards in use.
To best take advantages of this tutorial please use the material available at: http://gmap-tutorial-101.appspot.com/mapsapi101/toc
Advanced tipsIf your code gets big, use closure and programming in the large, as explained in the following video
then become one of the Google Maps experts as explained below:
How Google maps is changing the way we see the world (wired)