A:Answer In my opinion it isn't that hard to set up although I have familiarity with this kind of equipment. There are certain prerequisites needed before this can work.
You need an antenna that is capable of receiving TV off-the-air (OTA). If you can't get OTA channels without Tivo you won't get them with Tivo. Be aware of those inexpensive "free TV" antennas. Yes they will work if you are in close proximity to the TV transmitters (i.e. You live in a metro area), but if you are not near the transmitters they may not work for you despite what the dude on the commercial says. An outside antenna might be needed or if you live in a very rural or mountainous area you could be out of luck. TV signals generally require line-of-sight between the transmitter and your antenna.
Also, the Tivo box must have an internet connection and a Tivo subscription to work correctly. My Tivo box has a wireless connection which can be used to connect with my Internet router. I assume all current Tivo models do, but you should check. I don't work for BestBuy, but you might need a tech like Geek Squad to help.