Wireless Internet is high-speed Internet without the use of telephone lines.
Your connection would be to whichever of those towers is closest to your location. Wireless also allows the use of additional computing devices without the need for physical connections. If you have a PDA that works with the system, you can access your email or the web remotely, within your location. The connection varies in speed, according to your access agreement. Obviously, the more speed you want, the more expensive the connection will be.