Being an introvert myself, I found that this book had a lot of information I can use to expand my income in many ways that I have never thought of before. Brian Baker has put together some of the best methods to diversify your income, with everything from websites to affiliate programs. On top of that, there was lots of helpful links to get started with that are great for beginners.
'Passive Income Portfolio' is a must-have book for anyone who would like to seriously get out of the 9-5 work office crunch. Being able to work on my own with a steady stream of passive income is a wonderful freedom, and the tips in this book have proven to be invaluable.