Investing, explained.
Understand markets, diversification, and costs.
Understand the idea behind the numbers
Broker fees: what you really pay per year, and why the lowest-fee broker depends on you
Order fees, savings-plan fees, spreads, payment for order flow, currency markups, custody and fund charges: how to add up a broker's real yearly cost for your own investing habits, with worked examples.
Is this a bubble? Six questions about valuations, leverage and market risk
Use an evidence-based bubble checklist, understand historical research and see how leverage magnifies losses without treating a warning sign as a crash forecast.
Compound interest: why the timeline matters
Understand compounding, contributions, and the limits of smooth growth charts.
Diversification: different holdings, different risks
Evaluate portfolio overlap, allocation, and currency risk, including why a fund’s trading currency does not establish hedging.
Why the first 100K is the hardest: the maths behind your first big milestone
See why the first 100,000 takes longest, when growth overtakes your own savings, what US history says about the range of outcomes, and how fees and inflation slow the climb.
Index funds: a strategy, not a safety label
Learn what an index fund tracks, how it differs from a wrapper, and what costs and risks remain.
Investing vs. gambling: a 7-question test of how you actually behave
Score seven questions on holding period, picks, leverage and news sources, then see what research on day traders, fund investors and trading apps found.
Investment fees: small percentages, ongoing consequences
Separate account fees, fund expenses, and transaction costs when comparing investments.
Pump-and-dump scams: how promoters profit, a worked example and five red flags
How a pump and dump moves money from late buyers to early promoters, with a worked example in units, the move to group chats and crypto tokens, five official red flags and where to report.