Beginner in calibrating HE3D Prusa XI3 This is my first time calibrating my printer and I'm not sure where to start. The printer is running Repetier v0.91 firmware that came on the SD card that came with the printer. 

Anyway, the question I have is where do I start calibrating and how would I go about it? I have read on Google many ways and it seems there are different opinions. I am reading this at the moment: RepRap Wiki - Calibration.
There's a great tutorial here on youtube.

And personally my favourite is this tutorial.