Hi,
Just thought I would add to your post. I am new to photoreading and also studying commerce/ accounting at Uni. Sounds like you are not very directed when going into each chapter about what you need to get out of it for exam. I use my unit outlines and class notes to help me focus on what I need to get out of each chapter. If you want to know the best info for your exams, make sure you are activating with the questions that your tutor tells you are important to know with each chapter. You can't have 100% recall on everything, so get clear on what you really need to know before photoreading (or activating). I hope this helps you.Good luck for your exams.:)