It's a fun read but not very technical, or rather, not technical at all. It's a story, I didn't learn anything about finance or business strategy from it.
The late 80s were definitely a different time, though - the amount of money needed for the RJR LBO is much more easily accessible to people in similar positions in 2016. As of June 30th, KKR's AUM is $131B, while Blackstone is at $356B.
Another good read on PE is King of Capital (https://www.amazon.com/dp/0307886026).
If you're interested in learning the technical details of corporate finance, you're probably best off starting with something like the Coursera class Introduction to Corporate Finance (https://www.coursera.org/learn/wharton-finance), and then reading the textbooks referenced by the course for a more in-depth understanding.