The simplest advice I ever got was: spend less than you earn and invest the difference. Sounds obvious but most Americans don't do it. Track every dollar you spend for a month — you'll be shocked where your money goes.

Be very skeptical of anything that promises high returns with no risk. If it sounds too good to be true, it is. The dot-com bust should have taught everyone that lesson. Slow and boring index funds beat hot stock tips over the long run.

I'm not a financial advisor but I've learned a lot from personal experience. The most important thing is to start early and be consistent. Even small amounts add up over time thanks to compound interest. Don't try to time the market.

I made this exact mistake when I was younger and it cost me. Learn from others instead of learning the hard way. The personal finance section of any bookstore has dozens of books — they mostly say the same sensible things for a reason.