Stocks and bonds — what they are and how they differ
To invest, you need to know what you are buying. The two most important instruments are stocks and bonds — they are fundamentally different in terms of risk and how they work.
Stocks — you buy a piece of a company
When you buy an Apple stock, you literally become a part-owner of Apple — in a very small fraction. If the company grows and earns more, the stock price rises. If the company struggles, it falls. There is no guaranteed profit.
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Advantages of stocks
High growth potential — historically major stock indices have returned around 7–10% per year after inflation. The best instrument for building wealth over the long term.
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Disadvantages of stocks
High volatility — value can drop 30–50% during a crisis. Requires psychological resilience and a long investment horizon.
Bonds — you lend money
When you buy a bond, you are lending money — to a government or a company. In return you receive a fixed interest payment for a set period, and at the end you get your money back. Bonds are predictable and safer than stocks, but returns are lower.
Bonds
Fixed, predictable return
Lower risk of loss
Stabilise portfolio during crises
Return of 2–4% per year — not very exciting
Stocks
Higher growth potential (7–10%/year)
Dividends = regular passive income
Can drop 50% in a bad year
Require a long time horizon
Most investors hold a mix of stocks and bonds. The younger you are and the longer your horizon, the more stocks you can afford. The closer you are to retirement, the more bonds for stability.
02Compound interest
How money earns on itself
Compound interest is the most important principle in all of investing. Albert Einstein reportedly called it the eighth wonder of the world. The idea is simple: you earn not only on your own money, but also on your previous gains.
Example in numbers
You invest $10,000 and leave it for 30 years with an average return of 8% per year:
$10,000
Starting amount (your contribution)
$100,627
Value after 30 years (8% per year)
$90,627
Profit (money that made money)
Your 10,000 grew to over 100,000 in 30 years — with no additional contributions. 90% of the final amount is gains that went on to generate further gains.
Why time matters more than the amount
Compare two people: Anna starts investing $500 per month at age 25. Mark starts at age 35 — but contributes $1,000 per month, twice as much. Both stop at age 65.
$765,000
Anna — 40 years of investing $500/mo | deposited $240,000
$679,000
Mark — 30 years of investing $1,000/mo | deposited $360,000
Anna contributed $120,000 less than Mark yet ended up with $86,000 more. That is the power of starting early and compound interest.
Key takeaway: Time in the market beats the size of your investment. The best time to start is as early as possible — even with small amounts.
03Strategies
What types of investing are there?
Investing is not one-size-fits-all — there are several approaches that differ in time horizon, effort required and risk. It is worth knowing which one suits you.
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Passive long-term investing
Buy and hold. You choose a broad index ETF (e.g. MSCI World), add money regularly every month and leave it alone for 10–30 years. Minimal effort, historically the best results for the average investor. This approach is what this whole site is about.
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Active investing
Picking individual stocks and bonds yourself, following company results, making frequent portfolio changes. Requires a lot of time and knowledge. Most active individual investors underperform a passive index — because the market is very hard to beat.
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Short-term trading
Buying and selling stocks within days or weeks, trying to profit from price swings. Very high risk — statistically around 80–90% of traders lose money. This is not investing — it is speculation.
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Real estate
Buying apartments or houses for rental, or REITs (real estate investment trusts). Stable passive income from rent, but requires large starting capital and management effort. REITs let you invest in real estate from small amounts.
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Bank deposits and government bonds
The safest options — fixed return, no risk of losing capital. But the return often does not beat inflation over the long term. Good as an emergency fund and short-term savings, not great for building wealth.
For most people passive long-term investing is the best choice. It requires the least time, has the lowest costs, and historically beats most active funds. Everything else can be treated as a supplement once you have a solid base.
04Goal
How much do you need to invest to become a millionaire?
A million sounds like an astronomical amount. But with regular investing and compound interest it is completely achievable for an average person — as long as you start early enough.
How much per month to reach a million?
Assuming an average annual return of 8% (historical average of a diversified stock portfolio):
$860
per month for 30 years start at 25 → million by 55
$1,700
per month for 25 years start at 30 → million by 55
$3,700
per month for 20 years start at 35 → million by 55
Every 5-year delay roughly doubles the required monthly amount. That is exactly why time is said to be the investor's most valuable resource.
You do not have to aim for a million. Even $500 per month for 30 years at 8% per year gives over $745,000. It is about consistency and time — not large amounts at the start.
05When to start
When should you start investing?
There is one simple answer to this question: as early as possible. Not tomorrow, not after a pay rise, not when the market gets cheaper. Today.
Do not wait for the "right moment"
Most people delay starting because they are waiting for a better moment — until the market drops, until they get a pay rise, until they "sort out their finances". This is a costly mistake. Every year of delay means one fewer year of compound interest working for you.
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A good time to start
Now. Even at high market valuations, investors who put money in regularly every month for 20+ years came out ahead. The key is consistency, not timing.
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A bad reason to wait
"I will wait until the market drops" — sounds reasonable, but nobody knows when that will happen. You might wait 2 years and miss 40% of gains. And if the market does drop 20%, you still buy at a higher price than if you had started a year earlier.
Start with a small amount. $200–$300 per month is enough to get started and build the habit. You can increase the amount over time. The important thing is to start now.
06Buy and sell
When to buy and when to sell?
The rule sounds simple: buy low, sell high. In practice almost nobody does this consistently — because the human brain works in exactly the opposite way.
What the psychology of investing really looks like
When the market has been rising for a year and everyone around you is talking about gains — you feel like buying. That is the peak of euphoria and often the worst time to enter. When the market is down 30% and the media is writing about disaster — you feel like selling and running. That is precisely when prices are lowest.
When it is worth buying
Regularly every month — regardless of price (DCA)
When the market drops 20–30% (a buying opportunity)
When you have spare cash and a long horizon
When it is worth selling
When you are approaching your goal (retirement, buying a home)
When you are rebalancing (e.g. stocks grew too large a share)
NOT: when the market drops and you are scared of further losses
NOT: because a friend sold or the media are scaring you
DCA strategy — the solution to the timing problem
Since nobody knows when the market is cheapest, the simplest approach is to buy regularly every month — regardless of the price. When the market is expensive you buy fewer units. When it is cheap you buy more. Over the long term you average out your purchase price and do not need to guess anything.
The most costly investor mistake: panic-selling during a crash. Studies show that investors who sold during the 2008–2009 crisis and waited for calmer times lost tens of percent in gains compared to those who simply did nothing.