An Introduction to Investing

Investing feels intimidating, but most of what determines a good outcome over a working lifetime is not complicated. Time in the market matters more than timing the market. Diversification reduces risk without reducing expected return — the closest thing investing has to a free lunch. Costs compound just as returns do. Behaviour, more than asset choice, is what separates good outcomes from poor ones over thirty years.

Cash, meanwhile, is not the safe option people often assume it is. At 3% inflation, money sitting in a current account loses around a quarter of its real-terms purchasing power every decade. The most common expensive mistake is the household sitting on a six-figure deposit "until things settle down" — things rarely settle, and the cost of waiting compounds quietly in the background.

This guide covers the foundations: why investing matters and how compounding actually works; risk and return in plain terms; the six main asset classes and how they differ; the difference between Unit Trusts, OEICs and Investment Trusts, between active and passive management, and between direct and smoothed investments; how DFMs and Model Portfolio Services fit in; and why every market crisis in living memory felt like the end and none of them were. It closes with a worked illustration — £100,000 invested over twenty years across three approaches — and the five mistakes that quietly cost investors more than any market crash.

It is written to give you the foundations to make confident decisions, not to sell a product. Read it in about twenty minutes.