There is a little flap at the front of a ps3 inside it are memory stick ports so u can connect them 2 ur ps3
Neither. A PS3 uses hard drive, but u can use a memory stick or card if u want to.
Plug in you USB flash drive to the USB port and go to MY COMPUTER, then RIGHT CLICK on the DEVICE and click on READY BOOST
Staples, Best Buy, Radio Shack
Yes you can.