Didnt read Econ to pass Level I. Should I cover it before st understand, experience, political, recently, material

Nishant1

As the topic says, I did not touch the econ book for level 1.  It was too long and worth too little so I just did not bother with it.  I miraculously passed the exam with a 51-70% score in Econ and am debating covering the old material first.
Part of my reasoning was because I hated the topic after a bad experience in undergrad (econ teacher pushed his political agenda which made no sense so I assumed economics was a fake science - however I didnt understand what had happened until recently).  Ive recently become very interested in economics so I would like to learn more about the topic.  I have very little time constraints as I am currently unemployed but this status is not by choice and I cannot assume I will remain unemployed through june next year.
I have heard econ is very difficult this time around and am afraid that I may miss the big picture by diving straight into the new content.  What are your thoughts?