FIREDesk
Full guide · 8 min read
Investing for beginners: what to know before you pick a strategy
The short version of six years, more than a hundred books and a lot of real practice. Written for people who want to build toward financial independence and do not want to learn everything the expensive way.
Why this guide exists
Six years ago I knew nothing about investing. I read more than a hundred books, watched countless hours of videos and listened to podcasts. I started with ETFs and stocks and later moved to options. Each time I did the same thing: study first, then practice for real, because practice is the only thing that really makes you grow.
That path works, but it takes years, and most people do not have the time or the stubbornness to study that much. This guide is what I wish I had been handed on day one: the parts that matter, in the order that matters, without the years. It does not replace practice, and it does not replace a qualified professional for your own situation.
1Decide what you are investing for
Investing without a goal is gambling with a nicer name. Before any product, write three things down: how much you need, by when, and what for (a home, a safety margin, a retirement, financial independence).
The financial independence number
A common rule of thumb is to multiply your yearly spending by 25. It comes from the idea of withdrawing about 4% of a diversified portfolio each year. It is a starting point, not a guarantee: it depends on markets, on how long you need the money to last, on taxes and on what you do in bad years.
| Yearly spending | Rule-of-thumb portfolio (x25) |
|---|---|
| $24,000 | $600,000 |
| $36,000 | $900,000 |
| $48,000 | $1,200,000 |
Two ways to move the number: spend less (it lowers the target and raises what you can save), or earn more. Both are usually bigger levers than finding a better investment.
If this is your goal, our article on safe withdrawal rates goes deeper.
2Build the base before you invest
Three things come before any investment, because they decide whether you can stay invested when things go wrong.
- An emergency fund. A common guideline is three to six months of expenses in cash, so a broken car or a lost job never forces you to sell at a bad moment.
- No expensive debt. Paying off a high-interest debt is a sure return that no market can promise.
- A savings rate you can keep up. At the beginning, how much you save matters more than the return you earn.
An example you can check
Saving for 20 years, with a constant yearly return (real returns are not constant; this is only to compare):
| Plan | After 20 years |
|---|---|
| Save $6,000 a year, 5% a year | about $198,000 |
| Save $3,000 a year, 10% a year | about $172,000 |
3Costs and taxes: the quiet drain
Fees and taxes do not show up as a loss on any day, so they are easy to ignore. Over decades they matter a lot.
Same $6,000 a year for 20 years: at a 5% yearly return you end with about $198,000. If costs take one percentage point a year (a 4% net return), you end with about $179,000, roughly $20,000 less, for doing nothing wrong.
- Look for the yearly cost of any fund or product (often called total expense ratio or TER) and for trading commissions.
- Taxes depend on your country and on the type of account, so look up the rules where you live or ask a qualified professional. They change the result, and they are not the same in the United States and in Europe.
4Index funds and time
A broad index fund holds hundreds or thousands of companies at once, at a low cost. Its main strength is that you do not have to pick the right company. Many long-term investors use it as the core of a portfolio for that reason.
Time in the market and regular contributions are the two things you control. Trying to guess the best day to buy is the thing that most reliably hurts beginners.
5Risk in plain words
Risk is not only the chance of losing money. It is how much you can lose, how fast, and whether you can live with it.
- Maximum loss. Before you put money in, ask: if this went to zero, would my plans still work? If not, it is too big for you.
- Diversification. Spreading money across many companies and assets means one failure does not decide the result. It does not remove risk; it reduces the weight of any single mistake.
- Position size. Most large losses come from size, not from picking badly. A small position in a bad idea hurts a little; a big one hurts a lot.
- A quiet period is not safety. In our own options record, long stretches without a stop mean nothing about how open trades are doing. Judge by the worst case, not by the calm.
6Income from a portfolio
People who reach financial independence usually live off several sources. The common ones:
- Dividends from companies or funds that pay them. Payments can be cut.
- Interest from bonds or deposits. Safer in some ways, but inflation can eat it.
- Selling parts of the portfolio each year (the withdrawal approach in chapter 1).
- Selling options for a premium. It can add monthly cash flow, but it arrives unevenly, and a bad month costs more than a typical month earns.
Every source of income needs capital. Compare what a source would need with the rule-of-thumb 25x in chapter 1: they rest on very different assumptions, and the honest message is that none of them is a shortcut.
7Scams and red flags
If you have ever been scammed, you are not alone, and it says nothing about your intelligence. These signs should make you stop:
- A promised or fixed return (especially a high one).
- Pressure to act fast, or a deadline.
- Someone you do not know contacts you first on social media or messaging apps.
- You are asked to send money to a person or to a platform you cannot verify, instead of a regulated broker.
- A private group that shows screenshots of profits.
- You cannot find who is behind it, or what regulator supervises it.
8Where to go next, and a one-page checklist
You now have the order: goal, base, costs, a simple core, risk, income, and a filter for scams. Print or save this checklist and answer it before you invest anything.
- I have written my goal: how much, by when, what for.
- I have an emergency fund of three to six months of expenses.
- I have no high-interest debt.
- I know the yearly cost and the taxes of what I am buying.
- I can say what the worst case is, in dollars, and I can live with it.
- No single position can hurt my plans.
- I could stay invested through a 30% to 50% fall.
- I checked who is behind the product and what regulator supervises it.
Next step
Before you pick a fund, find out how much you can afford to lose. With ETF Lab you choose the biggest fall you could sit through and see which splits between stocks and bonds stayed within it in the past. It is in beta: request access.