WHAT IS IT? Wi-Fi lets a computer connect wirelessly to a network or the Internet. There are three types of Wi-Fi connections: Wireless Local Area Network (WLAN) using radio waves and with suitable for a larger area, Wireless Personal Area Network (WPAN) using Bluetooth for ranges under 30 ft and Wireless Wide Area Network (WWAN) using cellular towers for wider ranges. HOW TO SET IT UP? Wi-Fi can be easily set up at home with the help of a router. Look for a router that gives the best speeds. As of now 802.11n routers are the best with speeds up to 450 Mbps and it is best to buy these routers. But soon 802.11ac, which can achieve speeds of up to 7 Gbps, could become the standard. But remember, all these are on paper and you will never see such speeds in a home environment. Before you buy a router also check what kind of Wi-Fi suits the devices you have. Also make sure that the device you have supports WPA2 which offers the highest level of security. HOW TO SECURE? The best way to secure your wireless network is to use encryption, either the older wired equivalent privacy (WEP) or the safer WiFi protected access (WPA). WEP uses a password while for WPA you need a pass phrase. Whatever method you use, make sure your password is strong. Also make sure that you change the SSID (service set identifier) of your router to something unique so that you don’t have 10 Linksys or Asus routers in your building and can’t make out whose is yours.