Warren Buffet is quite arguably the most successful investor of all time. And he has made most of his wealth based on very basic investment and financial principles, not difficult or complex financial schemes. So if you want to know how to make your money work for you, and build wealth as you prepare for retirement, it makes sense to pay attention to what Mr. Buffett does. Tom Sightings, writing for Yahoo Finance, details five lessons you can learn from Warren Buffett. Number one on the list is to stay invested in stocks. Instead of investing in currencies or other investment vehicles, Buffett believes strongly in the value of stocks and investing in companies that produce things we need and want. For the rest of the list, click here.