hi id like to mention a few things you might want to look into buying if you own a sony playstation portable
list of items are:
protection case
at least a 2gig memory stick
a game case
a usb cable to connect to the computer
why you need these things
protection case- as i have learned dropping your psp while a game is in "sleep mode" can delete all of your data, however if you have a game case not only will it stop that but it will prevent scratches and dents in your psp
2gig memory stick- with a 2 gig you can hold a LOT of photos, music and game saves
a game case- self explanatory to keep your games safe and scratch free
a usb cable- this is the small cable that connects your psp to the computer. you use this to get photos and music onto your psp