Hello. I have a site up that uses StoresOnline as its hosting service. They also have a "storebuilder" which is kind of a template/point-and-click set up for websites. ("Insert Page name here", "add image here", etc)
They have a button in the element builder for adding a tooltip to an image, but no such feature for adding one to a text element. When I questioned "support" I was told that they couldn't find an answer on google(!) and recommended this site.