When you ask an instructor to show you how to push-up or squat, you’re asking him to show you how to perform upper level martial arts, or how to play music on a new instrument, or how to ride a motorcycle. These are not activities that one can learn quickly.
They require study, theory, practice, and ongoing, repeated practice. This will be sobering and perhaps even disheartening to some but to suggest otherwise is not only overly optimistic, it’s downright irresponsible.
Having said this, I do believe that the burden of such skills is not insurmountable, especially for the truly motivated and disciplined subject.
My suggestion for anyone who wishes to apply our most general principles to basic and conventional movements is to practice a small number of basic exercises well and often. Research proper performance of these basics in books and online. Make every effort to execute your movements with focused precision and intent. Record your performances using video and watch for every possible discrepancy and continue to practice. Practice in the early stages should trump ambitions for intensity (i.e., muscular failure and deep inroad).
Only when you’ve practiced sufficiently and over-learned these activities can a program of free squats, push-ups and chin-ups be productive and effective.
It is worth reading through and ties in to some of my recent thought in recent posts, where I have been musing on the development of strength and the separate development of skill. The video from Doug here and the work of Erwan Le Corre have also contributed.
(Obviosuly you should go slower than this....and the guys neck should not be extended like that....)