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The video seemed to be geared more towards new construction than performing a retrofit installation.
The new construction method is always a preferred method which is why it is more cost and time effective to perfrom a whole house wiring at this stage.
Good for basics; however if you are into meat and potatoes of performing an installation, spend some time either reading or even volunteering with a wiring contractor friend or acquaintance.
Book or self-study is nice but there is no real substitute for practical hands-on knowledge and experience.