Do you know of any programs in which I could quickly make my own massive diagram? Preferably, it would be one where I could have a broad overview and then be able to click and view specific mechanisms, other details for each step.

I'm shitting myself prepping for my biochemistry final. Trying to remember every mechanism from glycolysis to gluconeogenesis, the citric cycles, urea, and glyoxylate, and the 30 other processes we're supposed to remember.