IMHO, Leases and tax stuff was the bottom of the barrel of all the LI CBOK. I'm not saying it's not important for analysis, but probably the most boring stuff to learn. I ended up bailing on the leases and just hoping there wouldn't be too many problems on it. Taxes were a bit better. I lucked out by boning up on LIFO/FIFO just before bed the night before. Guess, somebody up there liked me...
Stuff you don't know, best to do in stages. A bit sinks in each time.