Save a fix percentage of your income.
Insure yourself for the entire loss of income assume you cannot work from the time of insurance purchase to the time of your retirement. Choose the cheapest insurance product. Plain products like term is better.
Invest your savings into index funds. I can't stress this enough. http://www.alexlew.com/p/why-passive-investing.html?m=1
Your portfolio should be diversified across regions and into stocks and bonds.
Rebalance every year.