This book proposes an approach for designing and developing e-learning programs, according to which, experts in education - who may know nothing of computer programming - can effectively contribute to the development efforts of the applications they wished to use. This approach can only be possible thanks to recent developments in the area of Software Engineering, which enable developers to abstract most of the computer idioms out of the design and development phases. Consequently, experts in education are offered a friendly programming environment, basically requiring the knowledge of their own domain. Remaining faithful to the proposed methodology, most of this book can be read - and understood - by non- programmers, whereas similar books are clearly targeted at people knowledgeable in computer programming.