id reccomend also checking into tails and or kodachi, they run on a usb, you can bot into them and do your surfing, when your done you remove the usb and it leaves no trace on the actual pc. kodachi also has a nuke feature if you ever have the need. one thing i like about kodachi is the way its built, with enough knowledge anyone can make that build althought if you are looking for an out of the box with minimal setup id grab kodachi to throw on a usb and sur