Question about studying Financial Analysis Techniques all, everything, different, studying

soddy1979

So I just got the the “Financial Analysis Techniques” chapter in schweser notes (FRA) and counted 54 different ratios in this chapter..
I am one of those have to write down/take notes of everything while I study kind of people but there is NO WAY I am going to write all these down or memorize them all. What I noticed is at the end of the chapter where it states the Key concepts and LOSs’ there are only a few ratio definitions (5) and 2 equations (DuPont and Extended DuPont).
My question is would it be better to just really study the LOSs’ in the key concepts (after I read the material thoroughly of course) or should I really put time into understanding all 54 ratios? I’m only asking b/c like I said I’m a notes person but this is where I draw the line..