I know this is regarded as a classic,unsurpassed to some,in the field of Astrological literature - and it is,and you will learn a lot of relevant info.
However,if you're really in to the subject,obsessively even,you Have to read - you can get it from Amazon - Erin Sullivan - she is a Canadian astrologer,and outstanding,in my opinion.
Check out "Saturn in Transit" - you'll see what I mean.
Her other books are equally excellent.
If you're fairly new to Astrology,"Saturn,A New Look at an Old Devil" is a good place to start,though.