ways to study effectively

Since a huge chunk of your study time is spent on reading, try employing reading techniques like the SQ3R. It teaches you to Survey the contents of the book or reading material, Question the reasons you need to read the material, Read and understand the text, Recite the salient points in what you just have read and take down notes if there are any, and Review take a few days or a week to go over what you read in order to better familiarize yourself with the material.