Yes you can tether free on the MAC, using pdanet. I think easy whether also works but not sure on that one. They are both programs in the market, they both have free trials but require purchase after the trial end or you can only go on unsecured sites is how it works to my understanding. Boo boo may be able to hook you up with easy tether but not certain, worth asking tho
o and both require some sort of program on your computer, but they are easy to install and use : ) hope that helps, as for the other stuff I am not the one to ask
sorry friend