Good day, as the subject might tell you i need/want to program a file explorer, but i really can't find any good tutorial on the web, well actually I only found one and it was on this same website but it really don't explain much about what he is doing ,and I don't want to copy&paste the source code.

Long made short, I would like to know is someone here knows about a tutorial with explain you the basics and not so basics to make a file explorer.

Thank you.