In this chapter, you learned the basic behaviors of numeric vectors, logical vectors, and character vectors. These vectors are homogeneous data types that can only store elements of the same type. By contrast, lists and data frames are more flexible since they store elements of different types. You learned how to subset these data structures and extract an element from them. Finally, you learned about creating and calling functions.

Now you know the rules of the game, you need to get familiar with the playground. In the next chapter, we will cover some basic yet important things about managing the workspace. I will show you some common practices of managing the working directory, the environment, and the library of packages.