Investing
Compound Interest Explained (With Examples and a Formula)
How compound interest works, the formula, the Rule of 72 and examples that show why starting early matters.
✓ VerifiedUpdated October 2026·6 min read
Investing explained for beginners. Index funds, brokerage accounts and compound interest, with a focus on low costs and long-term thinking.
How compound interest works, the formula, the Rule of 72 and examples that show why starting early matters.
Compare robo-advisors and DIY investing on cost, control and effort, with the fee math over 30 years.
What index funds are, why low fees matter, how to choose your first fund and how to buy it in under 30 minutes.
A plain-English guide to start investing: the order of accounts, index funds, how much to invest and mistakes to avoid.