The book, Essentials of Information Technology (402) for CBSE Class X, based on the Skill Subject approved by CBSE’s Department of Skill Education, aims at upgrading the skills and proficiency of the young learners in the field of Information Technology. The course has been divided into two parts—Employability Skills and Subject-specific Skills—details of which are as under: • Employability Skills incorporates five important skill sets, viz. Communication Skills, Self-Management Skills, ICT Skills, Entrepreneurial Skills and Green Skills. Each of these skills has been covered in detail as a separate unit as per the CBSE syllabus. • Subject-specific Skills covers advanced topics and features of LibreOffice Writer, Electronic Spreadsheet (Calc), Database Management System (SQL and Base) along with Maintaining Health, Safety and Secure Working Environment. It consists of four units. Unit 1 focuses on the advanced concepts of Digital Documentation like Styles, Table of Contents and Templates. Unit 2 comprises advanced Electronic Spreadsheet, covering concepts of Subtotals, Data Consolidation, Working with Scenarios, Goal Seek and handling Macros along with Sharing Workbooks—Spreadsheets and Hyperlinks. Unit 3 is based on Database Concepts and their implementation using SQL Commands while Unit 4 is about Managing Health and Safety at Workplace. The book includes all the latest changes made by the CBSE in the IT-402 curriculum and question paper pattern, with focus on Competency-based/Application-based/Case Study-based Questions, Objective Type Questions and Subjective Type Questions (both Solved & Unsolved). Besides, a Model Test Paper (with Solutions) and a Practice Paper have been included in the book. Students can also access the CBSE Sample Question Paper (Solved) by scanning the relevant QR code.