 I am Nainan P. Kurian, retired professor of civil engineering, Indian Institute of Technology and Human Rights. I welcome you all to this e-book under the title, Concepts and Techniques in Geotechnical and Foundation Engineering, prepared by me under the aegis of NPTEL, that is National Program on Technology Enhanced Learning, of the Ministry of Human and Social Development, Government of India, administered, among others, through IHG Madras, with PST College of Technology in Coimbatore as one of the partner institutions. It is hosted on the NPTEL website for free downloading by any prospective user. For me is the outcome of a long-cherished desire to bring out a book in the e-format, covering subjects I am engaged in professionally. As Agar's contents, the book presents 53 topics grouped into 51 modules which can support two courses in Geotechnical Engineering and Foundation Engineering. In the first place, it is not an e-version of a hard copy book available in print. It is fully launched on the e-platform, leveraging, as it does, many of the inherent capabilities of the e-format, which will make its use a more user-friendly experience. This includes the use of a color scheme, both in text and figures, which is suspected to add to its communicative value. A distinguishing feature of the book is the use of animation in figures, which mainly takes the form of segments appearing in sequence, making up the full figure. In the same manner in which a student learns to draw the figure, this should indeed make it a more student-friendly experience, when compared to he or she trying to learn a complicated figure from a hard copy. An added feature of the book is that text and figures are supplemented by pictures and video clips wherever possible, which will add to the communicative and written value of the material presented. All these features are expected to contribute to making it a truly technology-enhanced learning experience. In essence, the book is conceived as a learning aid in the hands of the students and a teaching aid in the hands of the teacher. The target audience also includes professionals who may want to update their knowledge in the subject field. I request you to read the author's preamble, which sets out the full scope of the book, followed by instructions on how to download and use the text and figures. I hope you will find the experience interesting and worthy, so happy reading.