I did some research on paragraph separation and found three styles.

Indent every paragraph.

 

 

 

 

 

 

 

Indent every paragraph except the first.

 

 

 

 

 

 

 

Do not indent the paragraphs but put some space between them.

 

 

 

 

 

 

 

My preference is the third one shown here where there is a linespace of half the font size. Observe how it is done in books, magazines and online newspapers.