Hey,
Lots of good free or shareware apps out there. Sorry I dont have any links with me now but just do a search. Tucows comes to mind as well as the major magazines. I have a great program for passwords if you subscribe to a lot of sites, a great clock/alarm program, games, scientific and other calculators, currency exchange rates for travelers, spreadsheets and just about anything you can think of. Look around, especially at that great price you got on the palm. HEE, HEE.
Stay away from the wireless services and modem based web browsing unless you have a specific need and a lot of cash.