Originally Posted by f4780y
Yes, you basically get the carrier to include their tethering option on your contract (assuming you don't have it). Once activated you will see a new option in the iPhone Settings App called "Personal Hotspot". When turned ON, you are then able to connect the iPad to your phone and share it's internet connection via WiFi or Bluetooth (bluetooth tends to use less battery). You can also connect other devices to your phone, e.g. a Laptop, and this can additionally be done via the USB cable (as well as wifi or bluetooth).
You don't need anything extra on the iPad.