Lesson 1 is about the 3 revolution.The first one is the printing press.Learning materials of this time was printed already.Invention of the printing press was fast growing such time and commonly used of all.Second revolution is the library. Bases of learning was in the different books found in the library. They will really relay the new references than to the old ones. The last revolution, is computer. Learning this time was through computer.Easy to access if you only have computer at home. By just simply search it by typing what you wanna know.Then you can find the answers to your question behind in mind. Therefore learning computer is faster, if you are just literate to use it.