The Richest Man in Babylon is one of the first books I ever read on finance and is one of my favourites. You can down load it for free here.
Think and Grow Rich is another book I love and read in my teenage years. You can dowload it for free as well by clicking here
Napoleon Hills Laws of Success you can down load here is another fantastic read which is free.
Also here is What does it take to make one million by John Assaraf. This is actually a pdf but it is really eye opening. I have posted about it on here before but wanted to add it again. John is mentioned in The Secret
and is also coauthor of The Answer
(I personally like The Answer best). Both are very inspirational books.
These are all worth are read. The Richest Man in Babylon change my life. I highly recommend it to everyone, even your children. It is one of the many books I want my kids to read.