You know very little about a computer and need to know how to turn on the double click on any word?

I am assuming your are reffering to a mouse double click as the default action. If so then you need to go into your control panel from start button and find and click on the mouse icon in the list (alt click if need be) then depending on the type of mouse your using it will have a list of things that can be personalized. Generally on the first page there will be a double click speed setting, with this you can change the speed between clicks if set to high you wont be able to double click fast enough for it to see. So odds are you need to slow down the speed so that it gives you more time to double click your mouse. Hope this helps you )