Longhorn Secondary Computer Study Series is a new course developed in line with the new curriculum. It fully covers and fulfils all the goals and targets of the new Kenya secondary school computer studies syllabus. It is unique since it presents the contents in well logically organised topics which facilitates sequential transition from one concept to the next. It has user friendly approach which is well-centred on the learner's own envoronment for easier understanding. It uses simple language and provides exercises that enable the learner recall, understand and apply the skills acquired. It provides well labelled pictures, drawings and screenshots that relate theory to the real world practice