Values 

A value is what a program deals with. If you wrote a calculator program, then the values of the program are numbers. If you wrote a text search program, then the values are strings.

The programs we deal with nowadays as programmers are much more complicated than calculators. We deal with different types of values, ranging from number types (int, float64, and so on) to text (string).

A variable holds a value:

var a int = 1

The preceding line indicates that a is a variable that holds an int with the value 1. We've seen previous examples with the "Hello World" string.