Which PSP package should I buy?

I live in Canada and am going to buy a PSP.

What PSP package should I get?  The Core or a bundle that comes with certain things?  Plus, what accessories should I get with it right away after I buy it .

I want to be able to play games, play games online and play demos.

Do I need to buy a USB cable (will any kind work or a special PSP kind only) for certain things (e.g. to get demos)?

Do I have to buy a memory stick to do the following (and if so, how big):

-Save games or does the PSP have any internal memory for game saves? 

-To play online?

-To play demos ?

Thanks for any info.

You will need a memory card to save demos and games as the psp has a very small internal memory that you cannot often use. Here is a great deal on a card. 2Gb for $30, half price on a good sized card.

http://www.gamestop.com/product.asp?product%5Fid=802040

As for internet you will need a game with online support such as Socom2 or MGS: PO, you will need either a router or a wifi usb dongle, or you can find a hotspot like a cafe and play. If you have all that then you are set.

As for the bundle option, if the bundle has a game that you like then go for it. If not then the core system is a steal at $170 now. Accessories i would recommend a screen protector as the screen is huge and you will be upset with scratches. Ausb cable is not necessary unless you want media on your psp. you said you were interested in demos so u will need a cable. I heard most camera cables work for the psp, however mine does not.

$30 for a 2gb? I got my 4 gb pro duo in today, $37, and it came with memorystick duo adapter tooJack7Of7Spades7

I was lookin at those on ebay. Decided i didn't trust them and didnt feel like waiting a week and paying $20 to ship it. Went down to gamestop and got a trusted deal.