You can refer the basics of Micro:bit projects from the official Micro:bit website. There are plenty of basic examples which are provided which we feel is more than sufficient and not required to explain them separately over here.
Basic Lesson-1: Led’s & Buttons
Basic Lesson-2: Inbuilt Sensors
Basic Lesson-3: Radios and Pins
In the next chapter we will cover all the projects related to Quad Store’s Super Starter kit for Microbit by using various modules and sensors.