Computers are popular in the current era of Social networking, E-commerce and online applications. Computers are used in almost every field such as business, education, research etc. The basic knowledge of computer science is necessary for everyone. The use of word processing software, Excel, Powerpoint is beneficial for better use of computer. Computer networks, Internet Fundamentals and Computer Architecture is useful to understand. This book provides the reader practical knowledge of Word processing, Excel and Powerpoint. The snapshots of tools and steps are provided for better understanding of reader.This book includes various components of computer, network and Internet Fundamentals. The generation of computers are included with programming languages for better understanding.