Learn Investing
Practical investing, from the ground up. 227 lessons on how markets, companies and money actually work — beginner to advanced. Trade real prices in a simulated portfolio, and every trade has to be backed by real reasoning, not a guess.
Learning on your own? Start here. No class or teacher needed — work through it at your own pace. If you are studying for an exam instead, the IB, AP and Personal Finance courses follow those syllabuses unit by unit.
Beginner Investing
49 lessonsWhat Is a Stock?
Understand what a stock represents and how ownership in a company works.
Start Lesson Practice this topicWhat Is Market Capitalization?
Learn what market cap means and why it matters.
Start Lesson Practice this topicUnderstanding P/E Ratio
Learn how to evaluate a stock using the Price-to-Earnings ratio.
Start Lesson Practice this topicWhat Are Dividends?
Understand how dividends work and why investors value them.
Start Lesson Practice this topicRisk vs Reward Explained
Learn the relationship between investment risk and potential return.
Start Lesson Practice this topicThe Balance Sheet: Assets, Liabilities, and Equity Explained
One equation — Assets = Liabilities + Equity — explains every balance sheet ever filed.
Start Lesson Practice this topicThe Income Statement: From Revenue to Net Income
Revenue is the top line, net income is the bottom line — everything in between is where the real story lives.
Start Lesson Practice this topicDiversification: Why Not Putting All Your Eggs in One Basket Actually Works
Diversification doesn't guarantee gains — it protects you from one bad bet wiping out everything else.
Start Lesson Practice this topicAsset Allocation: Stocks, Bonds, and Why the Mix Matters
There's no universal 'correct' mix of stocks and bonds — it depends on time horizon and risk tolerance.
Start Lesson Practice this topicWhat Actually Gives Bitcoin Value?
Bitcoin doesn't pay a dividend or represent ownership in anything — its case for value rests on something different entirely.
Start Lesson Practice this topicThe Difference Between Being Rich and Building Wealth
High income and net worth aren't the same thing — plenty of high earners spend everything they make and stay broke, while some modest earners build real, lasting wealth.
Start Lesson Practice this topicWhat Is a Company, and What Does It Mean to Own Part of One?
A share of stock isn't a lottery ticket — it's a real, legal claim on a real business, and that distinction is the whole foundation of investing.
Start Lesson Practice this topicHow the Stock Market Actually Works
Behind the numbers scrolling across a screen is a genuinely simple mechanism: a marketplace where buyers and sellers meet, and price is whatever they agree on.
Start Lesson Practice this topicWhat Is the S&P 500?
When the news says "the market was up today," they usually mean this one index — 500 of the largest U.S. companies, bundled into a single number.
Start Lesson Practice this topicWhy Do Stock Prices Move?
A stock's price changes every day for real reasons — some about the company itself, some about the whole economy, and some about pure human psychology.
Start Lesson Practice this topicBull Markets vs. Bear Markets
Two animals became the permanent shorthand for market direction — here's what each term actually means, and how long each one tends to last.
Start Lesson Practice this topicHow to Read a Basic Stock Chart
A stock chart is just a picture of price over time — learning to read the basic pieces is literacy, not a crystal ball for predicting what happens next.
Start Lesson Practice this topicWhat Are Index Funds, and Why Are They So Popular?
One of the most consequential ideas in investing history was strikingly simple: stop trying to beat the market, and just buy all of it instead.
Start Lesson Practice this topicInvesting vs. Gambling: What's Actually the Difference?
Both involve risking money on an uncertain outcome — but the math, the timeline, and what you actually own underneath make them fundamentally different games.
Start Lesson Practice this topicWhat Is Money, and Why Does It Exist?
Before there was money, trading required both people to want exactly what the other had — money exists to solve that problem, and it has looked very different across human history.
Start Lesson Practice this topicEarning, Spending, Saving, and Investing: The Four Things You Do With Money
Four different jobs, one paycheck: what you do with money after you earn it determines almost everything about your financial future.
Start Lesson Practice this topicThe Time Value of Money: Why a Dollar Today Beats a Dollar Tomorrow
A dollar in your hand today can be put to work immediately — a dollar promised for later cannot, and that gap is worth real, calculable money.
Start Lesson Practice this topicWhat Is Inflation, and Why Cash in a Drawer Loses Value
Every year prices creep upward and every dollar buys a little less — cash that just sits still is quietly losing a war it can't win.
Start Lesson Practice this topicHow Banks Actually Make Money From Your Deposits
Your deposit doesn't sit in a vault with your name on it — banks lend most of it out at a higher rate than they pay you, and the gap is their business model.
Start Lesson Practice this topicWhat a Credit Score Is, and Why It Follows You for Years
A three-digit number most people never see calculated determines the interest rate on your next car, apartment, and mortgage for years to come.
Start Lesson Practice this topicGood Debt vs. Bad Debt: The Mortgage vs. the Credit Card
Not all debt is the same — the interest rate, what it buys, and whether that thing grows in value are what actually separate a smart loan from a trap.
Start Lesson Practice this topicHow the Wealthy Think About Money Differently Than Everyone Else
It's not a secret list of stock tips — wealthy households consistently make a handful of different decisions about assets, income, and time that most paychecks never get pointed toward.
Start Lesson Practice this topicHow to Build Your First Budget Using the 50-30-20 Rule
One simple percentage split turns a vague resolution to "save more" into an actual, followable plan for every paycheck.
Start Lesson Practice this topicWhat Compound Interest Is, and Why It's Called the Eighth Wonder of the World
Interest that earns interest on itself sounds small in year one and world-changing by year thirty — the math is real, even if the famous quote about it probably isn't.
Start Lesson Practice this topicHow to Open a Brokerage Account
The account itself is free at every major brokerage today — the actual decisions are which account type and what you do with it once it's open.
Start Lesson Practice this topicWhat to Look For Before Buying Your First Stock
"I heard it's about to go up" is not a reason to buy a stock — here's the short, honest checklist to actually run through first.
Start Lesson Practice this topicWhy Diversification Is the Only Free Lunch in Investing
Economists rarely agree that anything in finance is truly free — diversification is the one thing Nobel laureate Harry Markowitz himself called exactly that.
Start Lesson Practice this topicHow to Invest $100, and What It Could Become in 30 Years
$100 feels too small to matter — the math on what it can actually become over decades says otherwise, especially once you make it a habit rather than a one-time move.
Start Lesson Practice this topicWhat Dollar-Cost Averaging Is, and Why It Removes Emotion From Investing
Instead of trying to guess the perfect moment to invest, dollar-cost averaging removes the guessing entirely — the same amount, on the same schedule, no matter what the price is doing.
Start Lesson Practice this topicWhy Timing the Market Is Nearly Impossible, and Time in the Market Is What Matters
Missing just a handful of a decade's best trading days can badly damage long-term returns — and those best days routinely land right when it feels least safe to be invested.
Start Lesson Practice this topicWhat Fees Do to Your Returns Over Time
A 1% annual fee sounds tiny — compounded over 30 years, it can quietly eat roughly a quarter of what your money would otherwise have become.
Start Lesson Practice this topicHow to Research a Company Before Buying Its Stock
Every public company's most honest self-assessment is sitting in a free, public document most investors never open — here's how to actually use it.
Start Lesson Practice this topicWhat a 401(k) and a Roth IRA Are, and Why You Should Care Right Now
One of these might come with literal free money from your employer — and both offer tax advantages that get dramatically more valuable the earlier you actually use them.
Start Lesson Practice this topicBuilding Your First Portfolio From Scratch
You don't need 20 carefully chosen stocks to have a real portfolio on day one — for most first-time investors, the simplest possible starting point is also a genuinely strong one.
Start Lesson Practice this topicHow Apple Makes Money, and What Its Business Model Actually Is
The iPhone is still Apple's single biggest product by revenue — but its fastest-growing, highest-margin business is something you can't hold in your hand.
Start Lesson Practice this topicWhy Nike Is Worth Billions, and What a "Brand Moat" Means
A Nike swoosh on a shoe doesn't change how the shoe performs — but it changes what people are willing to pay for it, and that gap is worth billions.
Start Lesson Practice this topicHow McDonald's Became a Real Estate Company Disguised as a Burger Chain
McDonald's doesn't just sell burgers to customers — it owns the ground under thousands of its restaurants and collects rent from the franchisees who run them.
Start Lesson Practice this topicWhat Roblox's Business Model Is, and How Its Young Creators Actually Earn Real Money
Roblox isn't one game — it's a platform where anyone can build a game, and a small number of young creators have turned that into genuinely real income.
Start Lesson Practice this topicHow Netflix Went From DVD Rentals to a Global Streaming Giant
Netflix started by mailing DVDs to your house in the 1990s — the decision to bet on streaming years before it was obviously the future is a genuine business turning-point story.
Start Lesson Practice this topicWhy Amazon Started With Books, and How It Ended Up Running the Internet
Amazon began as an online bookstore in the mid-1990s — the part of its business that quietly generates the largest share of its profit today isn't retail at all.
Start Lesson Practice this topicWhat Tesla Is Actually Worth, and Why Investors Disagree So Violently
Two informed investors can look at the exact same company and reach completely opposite conclusions — Tesla is one of the clearest real-world examples of exactly why that happens.
Start Lesson Practice this topicHow Google Makes the Vast Majority of Its Money From Advertising
Search, Maps, Gmail, YouTube, Android — nearly everything Google builds ultimately points back toward the same underlying revenue engine: advertising.
Start Lesson Practice this topicWhy Disney Is More Than Movies, and What Its Real Competitive Advantage Is
A single successful Disney character can generate revenue through a movie, a toy, a theme park ride, and a streaming series — the same intellectual property, monetized many different ways.
Start Lesson Practice this topicHow TikTok's Parent Company ByteDance Actually Makes Money
TikTok's real business model looks a lot like other social platforms you already know — advertising, plus a growing e-commerce push — even though the company behind it is structured very differently.
Start Lesson Practice this topic