Having good study habits is the key to learning organic chemistry. Plan on studying every day for an hour or two. During that time you should review old material as well as reading new material. After reading a section, try to summarize it in your own words. By looking for the similarities between concepts and seeing how they are related to one another, you will gain a better understanding and will remember it longer.
Athletes lift weights, chemists think about chemical structure and chemical reactions.
Do the problems in each chapter and at the end of the chapter as a test to see if you understand how to identify hybrid orbitals, or how a given reaction works. It's often very useful to work backwards from the answer. When you find your mistake, try to understand WHY it was a mistake. The more practice you get in thinking like an organic chemist, thinking about problems in organic chemistry, the more you will understand. Understanding the how and why of organic chemistry is vital to doing well in this course.