Learn investing, one idea at a time
New to stocks? No problem. One concept, one principle at a time — short and simple. Then practice right away with the calculators.
Averaging Down vs. Averaging Up: When and How
Buying more as it falls (averaging down) vs. buying more as it rises (averaging up). How your average cost changes — and when each is worth doing or not.
5 Things to Know Before You Start Investing
Account, fees, taxes, diversification, and journaling. Five minutes before your first buy that can save you from big mistakes.
Compounding and the Rule of 72: How Time Becomes Money
Divide 72 by your return and you see how long it takes to double. Understand — in numbers — why compounding snowballs.
Stop-Loss and Risk/Reward: How to Protect Your Account
Decide in advance where you cut and where you take profit. Why a good risk/reward ratio is a winning habit.
Dividends and Dividend Yield, From the Ground Up
Dividend, dividend yield, and the ex-dividend drop — including what actually lands in your account after tax.
How to Read Warren Buffett’s 13F
What to look for — and what to filter out — in the quarterly 13F portfolio filings of great investors.
Recurring Investing: Work Backward From Your Goal
Set “100M in 10 years” and it tells you how much to put in each month. Planning that starts from the goal.