Every now and then you will find yourself thinking about a new project and it need to control some random thing. From Light bulb to turning on a factory to rotating a motor half circle.
To control most of the things you will need a micro-controller. Thats what you need.
What part to focus on if you are a very beginner.
Well! there are different parts working in a harmony in a controller. But you need to focus on the INPUT and OUTPUT ports for now.
If you don't know what ports is?
Try goggling them