" br>Chapter wise & topic wise presentation for ease of learning Quick Review for in depth study mind Maps to unlock the imagination and come up with new ideas Know the links R & br>D based links to empower the students with the latest information on the given topic tips & tricks useful guideline for attempting questions in minimum time without any mistake expert advice how to score more suggestions and ideas shared some commonly Made Errors highlight the most common and unidentified mistakes made by students at all levels ".