Introduction to programming - free course from Hexlet, training 23 hours, Date: December 1, 2023.

What is a computer?
The first lesson is devoted to introducing Tota, the main character of Hexlet. Together with our hero, we answer simple but important questions: What is a computer? Is he smart? Does he speak a programming language?

Human and computer languages
Let's understand what a programming language is. Why is the syntax of a language a necessary, but not a self-sufficient thing? We discuss which language to start learning with and how important the choice is at this stage.

First program
We study how the Hexlet development environment works and write our first program in JavaScript.

How to Study Effectively on Hexlet
We explain how the Hexlet training system works. What do the lessons consist of? What to do if it is not clear? How to do an internship? In what order should I take the courses?

Mathematics and constants
We are learning how to receive and send responses in JavaScript programs. Let's get acquainted with constants.

Functions and drawers
Let's get acquainted with functions - the building blocks of programs. Let's learn how to create and run them.

Conditions and decision making
We study the conditions and algebra of logic - a mechanism that allows programs to make decisions based on information.

Oh no, mistakes! And how to deal with them
Correcting errors is an important part of a programmer's job. In this lesson we study types of errors and ways to solve problems.

Recursion
Let's understand one of the most important and interesting basic concepts - recursion and recursive calls.

Iterative process
Let's look at another type of application of recursion, without delaying calculations until the very end.

Variables, declarative and imperative programming
We are learning new terms: variables, loops and mutable data. We learn to distinguish declarative programming from imperative programming.

Strings and working with characters
Strings, quotes, escaping... Let's figure out how to work with strings - sequences of characters.

The for loop and changing variables
How can I make the code a little simpler and shorter? We talk about the technology of changing variables and the for loop.

Tests and automatic code review
Every time we change something in the code, we run tests to make sure nothing is broken. Let's get acquainted with automatic code testing and write our first simple tests.

Modules
Let's get acquainted with modules - a way of dividing programs into component parts and reusing parts.

Expressions and instructions
Let's understand how expressions differ from instructions. Why is it important to see expressions and instructions in your code, rather than just sets of commands?

Environment
We'll explore three important concepts: environment, scope, and closures. Let's find out how the search for values ​​occurs.

Typing
Let's get acquainted with the idea of ​​typing. We are looking for the difference between dynamic and static typing, as well as the difference between strong and weak typing.

Pure functions
We consider the determinism of functions, side effects and pure functions.

What's next?
So we learned the basics of programming. Mastered the basic concepts that form the foundation of any program in any language. Let's figure out what to study next, in what sequence and why.

Additional materials
Articles and videos curated by the Hexlet team. Will help you dive deeper into the topic of the course