For optimum viewing set screen resolution to 800x600 More and more we are moving away from structure. There is no one to ask in industry. You are expected to work things out yourself. If you don't, you are punished. We can no longer have a babysitter for every five workers, those days are over forever.
People have to be self sufficent and try things on their own.
If they won't they will not make it. These lecture notes use a large font size because they are actually used in class where they are projected on a screen.