Framework stage 4: Invest
How to start investing
Understand what you own, why you own it, and how risk, time and cost shape results.
Why it matters
Investing gives long-term money a chance to outgrow inflation, but only with a strategy you understand and can stick with. Learn the building blocks: accounts, asset classes, diversification, allocation, fees and the behavior that holds it all together.
Questions this topic answers
- How do I start investing with a small amount?
- What’s the difference between stocks, bonds, ETFs and mutual funds?
- How should I think about risk?
- What is asset allocation?
- How much do fees really matter?
- Should I invest or pay off debt first?
Key ideas
The investing essentials.
The concepts that come up again and again, in plain English.
- Compounding
- Earning returns on previous returns. Because growth builds on itself, starting earlier gives compounding more time to work.
- Diversification
- Spreading money across many investments so one company or sector can’t sink the whole portfolio. It reduces risk but doesn’t eliminate it.
- Asset allocation
- Your mix of stocks, bonds and cash. It drives much of a portfolio’s risk and should reflect your time horizon and ability to handle losses.
- Index funds and ETFs
- Funds that hold a basket of securities, often tracking a market index at low cost. ETFs trade like stocks throughout the day.
- Expense ratio
- The annual fee a fund charges as a percentage of what you invest. Small differences add up over decades.
- Risk tolerance vs. risk capacity
- Tolerance is how much volatility you can stomach. Capacity is how much loss your plan can absorb. Both matter.
- Rebalancing
- Periodically bringing your mix back to its target after markets move, so your risk doesn’t drift.
Lessons
Go deeper.
The first lessons for this topic are in development. Until they publish, start with the key ideas and trusted sources on this page.
In development
- Investing 101: what you actually ownPlanned
- Stocks, bonds and funds explainedPlanned
- Asset allocation and time horizonPlanned
- Why fees matter more than they lookPlanned
- Taxable vs. tax-advantaged accountsPlanned
- Behavioral mistakes and how to avoid themPlanned
- Advanced: factors, fixed income, options concepts and portfolio riskPlanned
Want to know when new lessons publish? Get updates
Trusted sources
Primary sources worth bookmarking. They open in a new tab.
Keep going
Related topics.
- Optimize
Taxes
Learn how taxes shape your accounts, investments and paycheck, so you can ask better questions.
5 key ideas
- Invest
Markets & macro
Understand how inflation, interest rates and the economy affect your decisions, without trying to predict them.
6 key ideas
- Build
Financial planning
Tie it together: goals in the right order, a system you can maintain and a plan that adapts.
5 key ideas