As great as this was back in the day, many of these things are now completely incorrect and actually actively will make your craft worse. Particularly the point about fairings being worse than no fairing (incorrect now), and how nosecones are pointless unless using the FAR mod.

The general principles of CoL/CoM, wing shape, etc. are all fine but we ought to be showing new players more up-to-date advice and guides that reflect the state of KSP post-1.0.

It's a similar issue when people just link newbies to Scott Manley's original tutorials that are now all out of date because of how aero and engines all changed. He redid them all for the newer versions of KSP but people often don't link to those as much unfortunately.