You can record your iPad screen with just software. On your PC, use TightVNC, and on your iPad install the software named 'Veency' and run it.
Run TightVNC on your PC and enter the IP address of your iPad. If you don't know the IP address on your iPad, open a browser on your iPad and Once you connect, you will have your iPad screen displayed on your PC. To make a video tutorial of your iPad application, I recommend using My Screen Recorder. If you're going to include verbal directions in your video tutorial, it allows you to record both the audio from a microphone and the PC speakers at the same time. You can download My Screen Recorder