What part of that is simple exactly? I looked through that guide; there's at least eighty steps involved! People need to stop telling novice users, "It's just that simple," because it never is.
It is simple because every step goes into tedious detail - click this option, press select, turn on your console holding L etc. Its a rare guide that assumes no experience or knowledge on behalf of the user. Other guides can gloss over things - eg "make a backup with Emunand9". How is a novice going to know what emunand9 is, where to get it, how to use it, how to make a backup and what to do with the backup when they have it? And etc for any other sort of step involved.
Warning, analogy, tl:dnr;
Isn't a recipe better that says "beat two egg whites in a clean metal bowl until so firm it can hang off a spoon without falling, approximately three minutes on low speed, then gradually add 1 cup of icing sugar while still beating, over approx 20 seconds. Then place a few tablespoons in a piping bag and outline your biscuits. In another bowl, add one tablespoon of icing mixture and half a teaspoon of water, mix. Pour into outline and let it spread out. Leave for two hours to harden", than, "ice your biscuits with royal icing." The first is a lot longer but doesn't assume any knowledge, and a beginner could follow it. In the second, the beginner would have to go look up what the heck royal icing is.