As to those other things, I've never had to use them.
My university offers internet packages and they are in my budget so I am stuck. I wish my part of the world had $60 cable internet but anyway. I am in range of the university's signal but only if I sit outside. My current set up is a USB network adapter (with an antenna) clipped on my window and then a long USB cable to plug into my laptop. The cable works fine because it's long enough to not restrict where I use my laptop. However I would love to use my other devices on WiFi. Is it possible to buy a device that allows me to repeat this signal from the adapter? Or buy a router with antennas that I would be able to set up even though I don't have access to the university's hardware?
I have tried Connectify to broadcast the signal from my laptop but the speed is just awful. I think a device would be better.
This is the adapter I use: