Using commas generally is about being logical. Don’t leave them out when needed; don’t add them when not needed. Learn to know what a basic sentence unit is.
At times commas are simply wrong and must be avoided. They halt the flow of basic units in sentences.
Some parts of a sentence are essential for understanding. Knowing which elements are essential will safeguard isolating basics sentence units with commas.
Once you understand the concepts for using the coordinate comma, it is time to practice using the comma.
Understanding the coordinate comma rules means understanding terms like coordinate conjunction, compound sentence, compound predicate, run-on/fused sentence
When three or more ideas are strung together and a comma splice occurs, try and simplify the sentences.
Comma splice errors happen easily. Knowing the options to correct them is the trick to improving.
Grammar difficulties are many. So the more help available out on the web, the better.