Investing 101: Terms and Concepts for Beginners
- jamie Budd
- Apr 5
- 7 min read
Updated: May 5

What is Investing?
Investing is simply putting your money to work so it can help you reach big goals like retirement planning and making the most of your cash flow with the 50/30/20 rule. From stocks and bonds to funds and ETFs, understanding these core terms and concepts is your first step toward building a diversified portfolio that matches your risk tolerance and objectives.
Why Invest?
You might wonder, why not just save money in a piggy bank or under your mattress? Investing is important because it helps your money grow faster than regular saving. People invest for many reasons, such as:
Reaching future goals: Investing can help you save up for big things, like college, buying a house, or starting a business when you grow up. It’s easier to reach big goals when your money grows over time.
Beating inflation: Over the years, prices of things can go up (that's called inflation). If you just hide your money at home, it won’t earn anything and may buy less in the future. Investing can help your money grow enough to keep up with or beat rising prices.
Making money work for you: When you invest, your money is doing the work. For example, if you put money in a savings account or stocks, that money can earn more money (through interest or increasing value) without you having to do extra chores or a job for it.
In short, people invest so they can have more money later and achieve their dreams or handle emergencies in the future.
What are Stocks, Bonds, and Mutual Funds?
When you start learning about investing, you’ll hear about different things you can invest in. Three common types are stocks, bonds, and mutual funds. Here’s what those terms mean in simple words:
Stocks: A stock is basically a small piece of a company. If you own a stock, it means you own a tiny part of that company. It’s like having one slice of a pizza that represents the whole company. If the company (the whole pizza) grows and does well, your slice (your stock) becomes more valuable. People buy stocks hoping the companies will do well so their stocks can increase in value. However, stocks can go up and down in price. One day your stock could be worth more, and another day it could be worth less, depending on how the company is doing.
Bonds: A bond is like a loan you give to a company or a government. When you buy a bond, you are lending your money to them for a certain amount of time. In return, they promise to pay you back with interest (a little extra money) later on. You can think of a bond as an IOU note: you hand over money now, and you get it back later plus some extra. Bonds are usually considered safer than stocks because you know how much you'll get back (the interest is usually fixed), but they might not grow as much as stocks could.
Mutual Funds: A mutual fund is like a big basket of investments that lots of people contribute to. Imagine you and a bunch of friends put your money together in a jar and then use that big amount to buy many different stocks and bonds all at once. This way, you each own a small piece of everything in the jar. That’s what a mutual fund does – it pools money from many people to invest in lots of different things. The idea is that by investing in many companies or bonds at the same time, you spread out the risk. If one investment in the fund isn’t doing well, another might be doing better, so it balances out. Mutual funds make it easy for beginners to invest because a professional manager decides what to buy, and you don’t have to pick individual stocks or bonds yourself.
These are the basic building blocks of investing. There are other types of investments too, but stocks, bonds, and mutual funds are a great place to start learning.
What is Risk?
When people talk about investing, you'll also hear the word risk. In simple terms, risk is the chance that you could lose money or that an investment won’t perform as expected. All investments have some risk, because no one can guarantee exactly how things will go in the future. For example, if you buy a stock, there’s a risk the company might have problems and the stock price could go down, meaning your investment loses value.
It's important to understand that usually, investments that can make a lot of money also come with higher risk. Think of it like this: if you climb a tall tree to get the juiciest fruit at the top, there's a bigger chance you might slip and fall (high risk, high reward). If you pick fruit from a lower bush, it's a lot safer but the fruit might not be as plentiful or sweet (low risk, lower reward). In money terms, a savings account in a bank is very safe (low risk) — you won’t lose your money, but you also won’t earn a lot from it. On the other hand, investing in a new company’s stock might grow your money more if the company is successful, but it’s riskier because the company could fail.
Smart investors try to balance risk and reward. They don’t put all their money in one very risky thing; they mix safer and riskier investments to protect themselves. As a beginner, it's good to know that risk is normal – you just have to be comfortable with how much risk you are taking.
What is Interest and Compound Interest?
You might have heard the word interest when people talk about bank accounts or loans. Interest is basically extra money. Depending on the situation, it can be money you earn or money you pay:
Interest: If you save money in a bank, the bank might pay you interest. This means if you keep your money there, the bank gives you a little bit extra as a “thank you” for letting them use your money. For example, if you put $100 in a savings account with interest, after a year you might have $105 – the extra $5 is interest. Interest can also work the other way: if you borrow money (like using a credit card or a loan), you have to pay interest to the lender. In investing and saving, we usually talk about interest as the reward for saving or investing your money.
Compound Interest: This is a magic-sounding term but it’s easy to understand. Compound interest means earning interest on top of interest. It happens when you leave your money in an investment so that not only does your original money earn interest, but the interest itself also earns more interest as time goes on. It’s like a snowball rolling down a hill that gets bigger and bigger, or like planting a seed that grows into a tree and then that tree drops new seeds that grow into more trees. For example, imagine you have $100 and it earns 5% interest each year. After the first year, you have $105. If you keep it invested, in the second year you earn interest on $105 (not just on the original $100), so you end up with about $110.25. In the third year, you earn interest on $110.25, and so on. Over many years, this interest-on-interest effect can make a small amount of money grow into a much larger amount. That’s why people say compound interest is powerful – it rewards you for saving early and being patient.
Compound interest is your friend when you invest or save money. It can help your money grow faster over time. The key is to start saving or investing early, even if it’s just a little money, and leave it to grow. As time passes, you’ll see your money snowball thanks to compound interest!
Key Takeaways
Investing means putting your money into things (like stocks, bonds, or funds) that you hope will grow in value, so you have more money in the future. It’s like planting money seeds today to get more money later.
People invest to reach future goals and make their money work for them. Saving money is good, but investing can help money grow faster so you can afford big things (college, a house, etc.) or just have more security later on.
Stocks, bonds, and mutual funds are common investment types: Stocks make you a part-owner of a company, bonds let you lend money to a company/government for interest, and mutual funds let you invest in many things at once with other people’s money pooled together.
All investments involve some risk. Some are low risk (like savings accounts or certain bonds) but have smaller rewards, and others are higher risk (like stocks in new companies) but could have bigger rewards. It’s important to understand the risk and only invest in things you are comfortable with.
Interest is extra money you earn by saving or investing (or pay when borrowing). It’s a reward for keeping your money somewhere. Compound interest is even better – it means earning interest on your interest, which can make your money grow much faster over time.
Keep learning and stay curious! The world of investing might seem big, but you don’t have to know everything at once. Even as a kid, understanding these basic ideas is a great start. Ask questions, talk to your parents or teachers about money, and watch how money can grow. Learning about investing now will help you make smart money choices as you get older.
Investing can be like a fun journey where you watch your money grow, just like a plant grows from a tiny seed. With these basics under your belt, you’re well on your way to becoming a money-smart individual. Remember, everyone starts somewhere – even grown-ups had to learn this stuff! Keep saving, keep learning, and happy investing!