"If You Can: How Millennials Can Get Rich Slowly" by William J Bernstein.
This is the #1 best seller on Mutual Funds in the Kindle store.
William Bernstein is arguably the best author of books on practical and sensible investing. This particular book is a must-read if you are starting out investing for the long term but feeling baffled by BS from investment companies and financial planners with their own profits as priority. It is also an excellent read for anybody else interested in their retirement investments even if you are not just starting out. It is written for the US market but you can apply the logic to the Australian situation (eg considering Superannuation as similar to 401k plans).
Enjoy!
great book. very short and easy to read.