Bluetooth, my dear, is the connection. you are looking for Bluetooth enabled devices.
i'm guessing you need a bluetooth headset. these can be found at the store you purchased your Pearl from. or at an electronics store such as best buy, circuit city, etc. i suggest going to the store of your carrier. (more than likely, t-mobile)
BBmaps, i believe is the default map application on your pearl. i, myself, use google maps so i'm not sure if the first sentence of this paragraph is correct.
googlemaps, as well as many other great applications, and their instructions can be found at this thread:
http://www.blackberryforums.com/afte...es-thread.html
enjoy and welcome to the blackberry family.