My Posts are so short-winded nowadays. Sorry about that.
Anyway, if you’re on a Mac (duh?) go to System Preferences then Sharing. There are some interesting things there.
If you enable file sharing, you can share files (duh?) with other Macs on the network just by looking for the host computer (with all the cool files) in Finder, under the “Sharing” category on the left sidebar. I hope that was clear….if not, figure it out yourself, drop me a comment, or email me (check About page)
If you enable screen sharing, you are basically setting up a VNC server (I think) so that devices such as other computers (cool) and iPhones (eveeeen cooler) can connect to your computer, see your screen, do all kinds of crazy stuff.