This class requires a lot of memorization! You will need to know many structures and pathways, so I would take blank sheets of paper and draw them both out until you have them down.
It is also very important to understand how everything ties together. Understand what happens when insulin and glucagon are released, and how that affects PKA, PKB, beta-oxidation, FA synthesis, glycogen synthesis, glycogenolysis, glycolysis, gluconeogenesis, etc... I think bringing the big picture together was the most helpful to me in understanding metabolic biochem.
Good luck. It's a lot of studying, but the material is quite interesting since it relates to our metabolism/digestion.