Is there anything specifically I should look for while working through this book? Any certain techniques or tricks to look for? Advancements or improvements to some of his stuff since then that are worth investigating?
Darren, I think you asked some very good questions.
Let's take an example, P. 135 Deceptive Perception.
At first, I thought it was not such a great trick.
You take five cards from a red deck, you put a blue card among them and ask the spectators what you have in your hands. They say five red cards and a blue one. You then explain how deceptive the perception can be and show that in fact you have five blue cards and a red one.
Then I saw Michael Skinner performs nearly the same trick on his video, Michael Skinner's Professional Close-Up Magic Vol.2 and finaly understood how good this trick was.
In fact, Skinner says on this tape that the trick is so strong for a lay audience that you should keep this trick to end your performance.
Other very good tricks(from my point of view)in the book, "Impromptu torn and restored card", "Gymnastic Aces", "Aces up" which you can also find in Lorayne's Close-up Card Magic under the name "Flash Aces".
Regarding "The Bashful Queens", read also the original version of Jacob Daley described by Lorayne in Personal Secrets under the name Magician vs. Gambler.
Concerning techniques, The Erdnase Bottom Palm Improved is I think very good.
Concerning the side steal, read Marlo's technique, I think it is much better.