How to duplicate entries How do I duplicate content within craft? 

I created one article, and dont want to copy paste content from one to the other, or use one article as template for the others.
When viewing an entry, click the arrow on the save button and you'll see an option to "Save as new entry". This duplicates the entry and you can immediately begin editing the new entry. 

I'm not sure if this is what you mean by "use one article as template for the others" or not. It seems you can either manually create a new entry and then copy and paste content, or use this method.