In olden days to showcase any products, the people would take a printout of their subject and exhibit. Even to go to an interview they would struggle to gather all the documents needed. Now a simple online page (micro site) is enough to show what they want to exhibit.
How has this come through ages when webdesign was not yet available? As the printing industry was flourishing, there came a day in 1989. While working at CERN, Tim Berners-Lee proposed to create a global hypertext project, which later called asWorld Wide Web. You can get the details in
Now there are many online tutorials which conduct classes for web design, the famous online tutorial in them is