You need to buy a Bluetooth keyboard, which must be a Bluetooth keyboard that connects to the ipad.
First put the Bluetooth keyboard into a good battery or charge it and then turn it on.
Unlock the Settings on the ipad, find General, turn on the Bluetooth switch, search for the Bluetooth keyboard, then tap Connect, then follow the prompts and enter the verification code.
Once the connection is paired, you can use the keyboard to type.
Since the Apple tablet System has no pointer, it does not support the mouse. (not including the current mainstream windows 7 tablet) IOS (System) and Android, can use Bluetooth wireless keyboard (keyboard). Some keyboards will say on the package whether they work with Android or Apple, so be careful when you buy them.