what is the most efficient way to study a massive amount of material?

I am studying to take the DAT in about 5 weeks. I've gotten through most of biology and genchem but still need to get through organic and math up through trig. i am a hands on/visual learner, i learn almost nothing by reading or listening. luckily i understand the material when i read it but i'm studying so much it is all getting jumbled or forgotten. what are some of your tips for the most efficient way to study and actually retain the information, while moving at a relatively quick pace?