What I call the List comma, also known as the Serial Comma and Oxford Comma, is the easiest comma to understand and remember. When we write about more than two items, we use it like this:
red, green, and blue
red, green and blue (The last comma is optional.)
The List comma applies to nouns, verbs, and verb phrases.
He likes ice cream, cake, and candy.
Bob, Gerald, and Jim like candy.
I can’t remember if I liked the green one, blue one, or yellow one.
Give me cake and candy. (No commas)
He ran, jumped, and landed.
He laughed and cried. (no commas)
He ran through the woods, jumped over the river, and landed in a bush.
He slapped his knee and laughed like a hyena. (No commas)
Reasons I use the Comma and And, let’s have supper:
We can have steaks, mashed taters, gravy, and macaroni and cheese.
We can have steaks, mashed taters, gravy and macaroni and cheese.
We can have steaks, mashed taters, macaroni and cheese, and gravy. (This one is the most clear, in my opinion)
We can have steaks, mashed taters, macaroni and cheese and gravy.