Welcome to the introductory R course! During this course, you will learn R's basic syntax, operations, and data types.

Unlike many other programming languages, there is no need to use the dedicated function to output values. For example, we can start our R Journey with the most straightforward and basic arithmetic.

In R, you can perform basic arithmetic operations using standard operators. `+` for addition, `-` for subtraction, `*` for multiplication, and `/` for division. For example, let's calculate some math expressions.

The output of the script above is:
```
[1] 33
[1] 16
[1] 110
```
Note that each new operation starts on the new line.

In the first section, you will consider the very basics of R - outputting and performing basic operations. You will finish the section with the variables theory.

In the second section, you will learn the vector class in R, which represents single values too. You will consider the main data types for single values and how to work with multiple values of a kind at once.

Factors (or categorical variables) are widely used in real life. These are blood types, currencies, nationalities, brands, etc. Unlike numerical variables, factors are limited to a finite number of values.