Just informing you that there may be a rather small bug during the section of the tutorial regarding searching with the "/" key. Upon asking for the user's input, the Shift - "7" key is highlighted when in actuality you are wanting the user to press the "/". Upon pressing the "/" key, it proceeds perfectly.
Also, thanks for creating this tutorial. I've been putting off learning Vi/Vim for over 15 or 16 years ---- this tutorial is AWESOME! I can honestly say I'm learning something great today thanks to this tutorial.