If you need to connect a pen drive onto a projector, check the rear I/O for a USB port, then insert the drive. You can also buy a USB extender which will allow you to plug it in from far away.
You can connect a PS3 to laptop/PC, but not for display purposes; the HDMI ports on both devices are for output. It's possible to connect a PS3 to computer with...
Buy an adapter. There are many out there. A more modern projector will have something called SmartLink, or mirror link, which all Samsung devices have. Just go into Settings> Other...
Boot up a Ubuntu live CD install and go into try without installing, then when it has started up, go to parted, find the partition with Ubuntu on it and...
Yes, it would leave screw marks in the ceiling that you would have to spackle and repaint. If you didn't screw into a beam, the weight of the furniture would...