yes you do common sense
Yes, you need a memory stick for all PSP's except the PSP Go which comes with a 16Gb hard drive built in
No, for the PSP go you need an M2 card.
yes they both use the same memory stick
No
it depends on your memory stick i have a 2gb. i dont think the psp has internal memory. UNLESS THE PSP GO. that has internal memory
No but it can download many Games,the flaw of the psp go was that it cant play the UMBs psp original could
PSP only support Memory Stick PRo Duo
Depends If You Wanna Save Games/Movies/Music/Saved Data
yes it can because the memory stick size is the same but it also comes with a built in one which is 16 g
um........about 300 or more . but you also need to buy memory stick to save some game need alot of space so you can buy 2 of memory stick.
In order to get CFW you need a few things a memory stick(I suggest one with at least 1G of memory). A USB cable for your PSP or be able to stick your memory stick in your computer. Lastly you need PSP 1000. Some psp CANNOT get CFW because of their motherboards. Most PSP 2000's can get CFW, but at the time when I got CFW no PSP 3000's could get it but now some can. I'm pretty sure not PSP go's can get it. Also only some firmware can get CFW, so don't update it. Any questions go to http://pcconsoleforum.0fees.net
put your wallpaper on the memory stick. than take the memory stick out of your and put it in the other psp and go to memory stick under photo and make it your new background. also you can plug it into the computer and transfer it onto the PC then put it on to the other psp by plugging that one into the PC.