The book is a comprehensive guide for those who would like to design their own web-based instructional materials. It is not a scholarly work discussing theoretical issues or results of scientific research. It is written for practitioners who need advice in their design efforts. Thus, the author suggests that the user should not read the book in the conventional sense of starting with the first page and continuing toward the end. Instead, the user should get advice from related sections while his/her design matures. The book does not require a lot of technical expertise about programming, because basic web skills are enough to understand the issues of web-based training as presented in relevant chapters of the book.