These are not just audio books but are specially hand picked and thoroughly subjected to very strict criteria to ensure good value for money beyond their use for today.
I am using them myself to help myself and to help others, for me that's the most fulfilling part. Get one or two now and increase your value and add value where ever you are.
Dealing with failures
How to teach others what you know and profit from it
How to get what you want in life
Public domain money makers