It should be must read A to Z. Please don't try to make notes. If you make notes you have to write another Laxmikant. But you can mark important points by different coloured markers like red pen and green marker.please don't go for dd basu.One book should be read multiple times rather then 10 books single time. Before starting this book you can watch videos of unacademy of Tina Malhotra for basic preface to know basics of polity. For dynamic part The Hindu and yogana magazine are more than enough.