Learn the basics
Start at the top and work down. Each guide takes about five minutes.
What Is the Boglehead Approach?
A plain-English intro to the Boglehead investing philosophy: low costs, broad diversification, and staying the course.
The Three-Fund Portfolio Explained
How the three-fund portfolio uses US stocks, international stocks, and bonds to own thousands of securities with just three low-cost funds.
Asset Allocation by Age: Rules of Thumb
Common rules of thumb for splitting stocks and bonds by age, their trade-offs, and how to pick a mix you can stick with.
Why Low Costs Matter: Expense Ratios Explained
How expense ratios and fees compound over decades, with a worked example comparing a 0.04% index fund to a 1% fund.
Tax-Advantaged Accounts: 401(k), IRA, and HSA Basics
A beginner overview of 401(k)s, traditional and Roth IRAs, and HSAs, plus a common order for filling them.
Common Investing Mistakes to Avoid
The most common behavioral and cost mistakes that hurt long-term investors, and simple ways to avoid them.