Ok - reasonably straight forward - go to the home view, and the drop down menu (either tap on the time at the top left, or the menu icon at the bottom). Select App...Delete, and there you go.
If you still need assistance with your question you can click the following link and the Palm, Inc. Knowledge Support Library will provide step-by-step instructions:
Solution ID: 5417
Deleting applications and data from your device
I also noticed that you are new to the board. Welcome. If you need additional assistance with your device, most of your questions can be resolved by going to the Palm, Inc Support site, just type in your concern: