I've always been confused on this, but how would you know if you're putting your commas in the wrong place?

Use commas to separate independent clauses when they are joined by any of these seven coordinating conjunctions: and, but, for, or, nor, so, yet. ...

Use commas after introductory a) clauses, b) phrases, or c) words that come before the main clause.

Explanation:

To avoid confusion, use commas to separate words and word groups

with a series of three or more.

it is true my friend

hwhajaknendoalwne beus