Wordpress System is introduced as a content management system. By using website you can Manage your website independently. It is an Open SOurce Technology, Open Source Technology means it is developed by professional volunteers for public benefits. It does not required paid licence, becuase it has real intentiion to make the website development easy.
In common language we can say its zero maintenace website. And those who have computer literacy they can handle and do their business activity by this software. Wordpress is very easy Content Management Sytem for Business
If you want to lear wordpress CMS sytem the its very easy and it will take minimum 30 miutes. Its as easy as Microsoft Office Word.