If you are interested in ways to invest and maximize your money, keep reading. The site posted on top this review has excel templates that cover a variety of financial issues such as net worth, savings, investing in property, and more. One interesting template to download is the duplex investment model. You can enter assumptions about rent, property growth, down payments and mortgage rates and watch how it affects the ROI (return on investment). The other Excel templates include everything from personal finance to dividing up household chores.