Stocks, index funds, compound interest — why starting at 20 beats starting at 30, and how to begin with almost nothing. Your first real investment guide.
Time is the most powerful force in investing. Someone who invests $200/month starting at age 20 will have more money at 65 than someone who invests $400/month starting at age 30 — even though the late starter invested more total cash.
For most beginners, a simple S&P 500 index fund or total market fund is the best starting point.
Let's say you invest $100/month at a 10% average annual return:
Key takeaway: You don't need to be rich or an expert to start investing. A simple index fund, started early, can turn small regular investments into life-changing wealth. Time in the market beats timing the market.
Questions people ask
Can I lose all my money investing?
With a diversified index fund, it's virtually impossible to lose everything. The entire market would have to go to zero. Individual stocks can go to zero, which is why diversification matters.
How much should I invest?
Whatever you can consistently afford after covering needs and an emergency fund. Even $50/month is meaningful when you're young.
What about crypto?
Crypto is highly speculative. If you want exposure, limit it to a small percentage (5-10%) of your portfolio that you can afford to lose completely.
Should I invest before paying off debt?
Pay any debt over ~7% APR first. Below that, split extra money between debt and investing — especially if your employer offers a 401(k) match (free 100% return).
What's the absolute minimum to start?
At Fidelity/Schwab you can start with $1 thanks to fractional shares. The real minimum is the habit, not the dollar amount.
Should I invest in individual stocks?
For 90%+ of your portfolio, no — index funds are nearly always better. A small 'play money' allocation (5–10%) for individual stocks is okay if you genuinely enjoy it.