I looked at this video a few times last year to get my feet wet in the semi rifle world of proper sight alignment. I think most beginners understand the basic fundamentals of using the front sight post, rear sight aperture, and focus the eyeball to acquire proper sighting......but this video really helps break down for greater accuracy and good practice. Also goes over focus, breath control, trigger control, all the basics.
I learned that my face was WAY too close to my rear sight at first....not giving me a good rear sight picture because it was too blurred. Its a very basic video but loaded with beginner goodies...helped me a lot