06 Jetta fan switch?

I’ve got an 06 Volkswagon Jetta and am having an issue with my a/c fan. You can set the fan from 1-4. It won’t blow unless it is on 4. I’m not really savvy when it comes to car repair and have never really been a car guy, but I would love to be able to fix the problem myself. I know it’s a pretty broad question, but does anyone have any idea as to what my be the cause? And if so, can anyone direct to a website that will have some kind of walkthrough to help me repair it?

You will most likely need to replace the resistor pack for the speed control. They are usually screwed to the air duct near the blower motor. Follow the wires back from the blower. They usually lead to the resistors.