That's pretty good information there but they are assuming the reader has a decent grasp of fire control and coal setups. A lot of us use a reverse sear technique. Meaning set up a 2 zone set up for indirect and start the meat on the indirect side and cook to almost finished. Like 5 degrees shy of desired finished temp give or take.. then slide the steaks to the piping hot side to get a good sear on the meat. 90 seconds. Turn 45 degrees for a fine cross hatch. 90 seconds. Flip. No need for cross hatch on back side IMO unless you mess up the first side(presentation side). I do all the searing with the lid open to prevent too much internal temp rise.
Everyone has their way but essentially it's all the same. Start indirect, finish with a sear on the hot.
The Weber books have useful info in the front sections. YouTube is super helpful. Weber grill skills is good info. Pretty soon you will be picking up the $200 ribeye roast at Costco without fear.
Get a thermapen. Your grill game with increase tremendously. All the apps, books, YouTube videos, and forums can't tell you "exactly" when to pull product off the heat. A thermapen can. Knowing when to remove food from the fire is the most critical part IMO and to know that you have to know the internal temp.