I am currently studying managerial economics by W. Bruce Allen. The book is good. Are there any good book with quizzes , that makes economics sweeter? Books that relate to real world facts and figure would be better.
A good introductory book with a lot of data and statistics provided is: "Macroeconomics: Understanding the Global Economy" by David Miles and Andrew Scott. You can find the link to the book here:
It uses a lot of real world examples to relate economic concepts with real data and explain observed economic phenomena.
If you are interested also in Microeconomics I would recommend Mankiw and Krugman which you can find here: