The site contains articles to help you go from simply understanding the theory behind the concepts being discussed to developing the hands-on knowledge necessary to appear for certification exams of MCSE, ITIL etc.
The certification exams are divided into different articles. Articles contains one or more hands-on exercise. These exercises explore the part of the application being described.
Each chapter ends up with a summary of key concepts as well as short section listing key topics and terms you need to know before taking exam.