Understand the concept of Programming language

Step 1 of 7
What is a program?
A program is a set of codes (you can say, these are the sentences
that a computer understands) that performs a specific action.
Ex: A program will look something like this.

In this lesson, we will learn how to write simple programs but before
that we must understand three things to begin writing code.
How to store values in computer memory, i.e what is a variable?
How to operate on variables? Or should I say how to work with
variables?
What is a conditional statement and how to use conditional
statements?