# Theory [**Lesson # 1** "Introduction. Principles of designing and building multicopters"](https://github.com/CopterExpress/clover/blob/master/docs/en/lesson1.md) [**Lesson # 2** "Fundamentals of electricity"](https://github.com/CopterExpress/clover/blob/master/docs/en/lesson2.md) [**Lesson # 3** "Theory of soldering"](https://github.com/CopterExpress/clover/blob/master/docs/en/lesson3.md) [**Lesson # 4** "Aerodynamics of the flight. Propeller"](https://github.com/CopterExpress/clover/blob/master/docs/en/lesson4.md) [**Lesson 6** "Fundamentals of electromagnetism. Types of motors"](https://github.com/CopterExpress/clover/blob/master/docs/en/lesson6.md) ## Video lessons A little about types of copters Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Autonomous flights