1. Save at least 10% of your income as soon as you get a job.
2. Start a budget so that you can spend less than you make.
3. Start a Roth or Traditional IRA.
4. Start reading books about ETF investing.
5. Setup an Emergency Fund. Make sure to have 6 months worth of expenses in readily available cash at all times.
Your 30s:
1. Calculate how much you'll need in retirement.
2. Adjust your savings rate to meet the amount that you'll need to retire.
3. Get the right mixture of investments. Start investing in bonds and learning about them.
4. Make sure your credit report is squeaky clean. www.annualcreditreport.com
5. Get a non-commissioned professional insurance agent to look at your isurance needs.
6. Do your estate planning and write up a will.
Your 40s:
1. Diversify your investments: stocks, bonds, real estate
2. Setup your children's college savings plan, if you have no other debt than your mortgage.
3. Keep your lifestyle in check. You might be making the best money of your life, so don't let "lifestyle inflation" creep into your budget. Live like you did when you were saving plenty of money.
Your 50s:
1. Look at paying off your mortgage and make sure you have no other debt.
2. Check up on your projections and savings for having enough for retirement.
3. Look at potentially getting long-term care insurance.
4. Start transitioning your stock market assets to bond assets as the stock market hits new highs.
Your 60s:
1. Look to see how much Social Security is going to give you. Don't rely on Social Security or a pension for your retirement. But if you've made it to your 60s with it still being around you can now at least see how much they'll give you. Treat this as your slush fund. If you get it great, you can splurge, but if not you'll still be fine.
*This is really just the tip of the iceberg as to what you really need to do, but it's a good start. If you haven't done this then you need to get on the ball!