What is Indent?
Indent means how far you want to move the paragraph away from the left or from the right margin in a document such as MS Word. Generally, Professional material contains no indent, but some follow.
Generally, professionally printed books do not indent the first paragraph of materials. But only the most necessary people are following. This old method is abandoned in this new computer era.
Table of Contents
Types of indents in a document such as MS Word:
These are of two types. 1. Left and right Indent. These are explained below.

Increase or Decrease the Left Indention in a Document:
How far you want to move the paragraph away from the left margin is called Increase Left intention.
After Increasing the left indention, removing the space between the paragraph and the left margin is called decreasing Left Indention.
Steps:
Select the paragraph that you want to add or remove the left indention
Click and hold down the left indent on the ruler in a document such as MS Word
Move right to increase the left indention
To decrease the left indention, move it to the left.

Keyboard Shortcuts:
Press the “Tab” to Increase the Left Indention
Press the “Shift + Tab” remove the Left Indention
Add or Remove the Right Indention in a Document:
How far you want to move the paragraph away from the right margin is called Increase Right Indention.
After Increasing the right Indention, it removes the space between the paragraph and the right margin.
Steps:
Select the paragraph that you want to add or remove the right indention
Click and hold down the right indent on the ruler in a document such as MS Word
Move left to increase the right indention
To remove the right indention, move it to the right.

How to Indent a Paragraph in MS Word

Go to the Layout tab
Type/keep some text, then select the paragraph/s you want
Then choose the Left or Right Indent Option by clicking the arrows or typing the exact numeric value to set the Left or Right Indents.
During this period it almost stopped being used. Truth be told, it is of little use in the case of a paragraph. But its use is so much for a content format like form filling in the document, a special type of listing.
What does it mean to indent a paragraph?
It means how far you want to move the paragraph away from the left or from the right margin. Generally, Professional material contains no indention, but some follow.