If you are looking for additional books, either as gifts or for your own personal reading, here are a couple ideas.
Tony Robbins, the famous self-help guru, has just come out with a new book, his first in 30 years. The book is MONEY Master the Game: 7 Simple Steps to Financial Freedom and has already received rave reviews.
If you haven't read Flash Boys yet by Michael Lewis, you really should. It covers high frequency trading and the related front running, in a fascinating way. Almost like a stock market mystery.