E-book author named Engr. MD Nursyazwi Bin Mohammad, was an entrepreneur in the field of building construction, supplies and services, known generically as Wannah Enterprise. If you are interested, you can visit his website at http: //wannah.net/. Author comes from Sandakan, Sabah, Malaysia, and is one of the natives in Sabah, Momogun. The author has a Diploma in Mechanical Engineering (Manufacturing Technology) and Bachelor of Manufacturing Engineering (Manufacturing Design). Authors have extensive experience in the industry as a Machinist, welder, technician and engineer in some of the leading companies in Malaysia. However, now, active in the business arena. This e-book editor named Greanna Friva Binti Jainal. Editor is a teacher and now serves as an educator at SMK Muhibbah, Sandakan. Editor is a woman who hails from Sandakan, Sabah, Malaysia. Editor's start higher education in Labuan Matriculation College and then, resume studies in Universiti Malaysia Sabah in the field of Bachelor of Education and Science (Chemistry). Editor very interested in writing despite busy work in educating students. Editor is also very active in the uniformed units and an Assistant District Commissioner in Sandakan for Scout units.