Microsoft Office is a basic course of computer field. This course helps to operate computer and Office Documentation[Application, letter,formatting etc.], Office Calculation.
HTML (Hypertext Markup Language) is the set of Markup symbols or codes inserted in a file intended for display on a World Wide Web browser page.
Communication between two computer or more then computer it is called networking. Academy of it provide opportunities to be a professional in networking field. Classes given by Microsoft Certified Professional.
For many people, the main reason for learning a scripting language like PHP is because of the interaction with databases it can offer.