About 58% of Americans own some form of investment, yet many say they've never gotten a clear explanation of how investing actually works. If that sounds familiar, you're in the right place.
This guide covers the core concepts you need to get started, including account types, asset classes, risk, fees, and a strategy that removes the pressure of picking the perfect time to invest.
Why It Matters to Start Early
Time is the single biggest advantage a new investor has. Thanks to compounding, money you invest today earns returns, and then those returns earn returns. A 25-year-old who invests $200 a month and earns a 7% average annual return will have more at 65 than a 35-year-old who invests the same amount starting a decade later.
Waiting costs more than most people realize. You don't need a perfect moment to begin.
Account Types: Where Your Money Lives
Before you pick investments, you need an account. Here are the main options:
Taxable brokerage accounts let you invest in almost anything with no contribution limits. You pay taxes on dividends and capital gains in the year you earn them. These accounts offer flexibility because you can withdraw money anytime.
Traditional IRA contributions may be tax-deductible, and your money grows tax-deferred. You pay income tax when you withdraw in retirement. The 2025 contribution limit is $7,000 per year ($8,000 if you're 50+).
Roth IRA contributions are made with after-tax dollars, but qualified withdrawals in retirement are completely tax-free. This is often the best account for younger investors who expect to be in a higher tax bracket later.
401(k) accounts are offered by employers and often include a matching contribution, which is effectively free money. If your employer offers a match, contributing at least enough to get the full match is typically the first investing priority.
Asset Classes: What You Can Actually Buy
Once you have an account, you invest in assets. The main categories:
Stocks represent ownership in a company. They offer the highest long-term return potential but also the most short-term volatility. Individual stocks can lose most of their value; a diversified basket is much more resilient.
Bonds are loans you make to governments or corporations. They pay regular interest and return your principal at maturity. Bonds are generally less volatile than stocks but also offer lower expected returns.
ETFs and mutual funds bundle many stocks or bonds into a single investment. Buying one ETF can give you exposure to hundreds of companies at once. This makes diversification easy and affordable.
Real estate investment trusts (REITs) let you invest in real estate without buying property. They trade like stocks and are required to pay out most of their income as dividends.
Cash and equivalents include savings accounts and money market funds. These are low-risk but typically don't keep pace with inflation over long periods.
Understanding Risk
Risk and return are linked. Higher potential returns almost always come with higher potential losses. A few principles:
Diversification reduces risk without necessarily reducing expected return. Owning 500 stocks is much safer than owning one, even if the average return is similar.
Time horizon matters. A 25-year-old can afford to hold stocks through a recession because they have decades to recover. A 60-year-old approaching retirement can't afford a 40% loss right before they need the money.
Your risk tolerance is personal. A portfolio you'll panic-sell in a downturn is worse than one with lower expected returns you'll actually hold.
How to Open a Brokerage Account and Start
Opening an account takes about 10 minutes. Robinhood offers commission-free trading on stocks and ETFs, no account minimums, and fractional shares so you can invest with as little as $1. It's a solid starting point for beginners who want a simple interface.
Robinhood
Robinhood
Robinhood is a trading platform that brings stocks, ETFs, options, futures, prediction markets, crypto, and retirement accounts together in one app.
Standout feature
One platform for stocks, ETFs, options, futures, prediction markets, and crypto
Fees
$0 commission on stocks, ETFs, and options.
Pros
Zero-commission trading on stocks, ETFs, and options
Cons
Best perks (high APY, lower margin rates) require Gold subscription ($5/month)
Dollar-Cost Averaging: The Strategy That Beats Guessing
Dollar-cost averaging means investing a fixed dollar amount on a regular schedule, regardless of what the market is doing. You might invest $100 every two weeks, for example.
When prices are high, your $100 buys fewer shares. When prices drop, your $100 buys more. Over time, this tends to lower your average cost per share compared to trying to time a single perfect entry point.
Research consistently shows that most investors who try to time the market underperform those who invest steadily. Dollar-cost averaging removes the emotional guesswork. If you're ready to put this into practice, our guide on how to buy ETFs walks through the mechanics of placing your first order.
Understanding Fees and Why They Matter
Fees compound just like returns do, but in the wrong direction. A fund charging 1% per year in fees will cost you significantly more over 30 years than a fund charging 0.03%.
The key metric is the expense ratio, which is the annual percentage a fund charges to manage your money. Low-cost index ETFs often charge expense ratios below 0.10%. Actively managed funds frequently charge 0.5% to 1.5% or more, and research shows most of them underperform their index benchmarks over long periods.
Always check the expense ratio before buying a fund. A difference of 0.5% may seem small, but on a $100,000 portfolio over 30 years, it can represent tens of thousands of dollars.
Getting Started: A Simple First Portfolio
For most beginners, a simple starting portfolio might look like:
- A broad U.S. stock market ETF (like VTI or VOO)
- A total international stock ETF (like VXUS)
- A bond ETF (like BND) if you want less volatility
This three-fund approach gives you exposure to thousands of companies worldwide at very low cost. As you learn more, you can adjust. If you want to understand the difference between an S&P 500 ETF and an S&P 500 mutual fund, see our S&P 500 index fund guide.
Investing involves risk, including the possible loss of principal. This article is for educational purposes only and is not financial advice. Consider consulting a licensed financial advisor before making major investment decisions.
Frequently Asked Questions
How much money do I need to start investing?
Many brokerage accounts have no minimum balance, and fractional share investing lets you start with as little as $1. The more meaningful question is how much you can invest consistently each month. Even small, regular contributions add up significantly over years thanks to compounding.
What is the difference between a stock and an ETF?
A stock represents ownership in one company, so its performance depends entirely on that company. An ETF (exchange-traded fund) holds many stocks or bonds in a single fund, which spreads your risk across hundreds or thousands of companies. ETFs are generally considered safer for beginners than individual stocks.
What does it mean to diversify?
Diversification means spreading your money across different investments so that a single bad outcome doesn't wipe out your entire portfolio. Owning stocks in many industries, countries, and asset types means that a single company failing or a single sector declining won't destroy your savings.
Should I invest in a Roth IRA or a regular brokerage account?
If you're eligible for a Roth IRA and don't expect to need the money before retirement, starting there is often the better move for younger investors. Tax-free growth over decades is a powerful advantage. A regular brokerage account is a good complement once you've maxed out tax-advantaged accounts or need more flexibility.
