Going long
Going long is the intuitive side of trading: you buy because you expect the price to rise, and you profit if it does. Buy at 100, sell at 110, and the 10-point gain is yours, scaled by your position size. This is how most people naturally think about markets.
With a long position, your maximum loss is bounded because a price can only fall to zero. That does not make longs safe — leverage can still wipe you out well before zero — but the downside has a floor.
Going short
Going short reverses the logic: you sell first, intending to buy back later at a lower price. With CFDs and forex this is straightforward to do. If you short at 100 and buy back at 90, you keep the 10-point difference.
The critical difference is the risk profile. A price can rise without any theoretical limit, so the potential loss on a short position is not naturally capped. A short that goes badly wrong can lose more than the same-sized long, which is why disciplined stop-losses matter even more when shorting.
A worked comparison
Imagine two traders on the same instrument at 100. One goes long, one goes short, each with a 100-unit position. If the price jumps to 130 on surprise news, the long is up 30 and the short is down 30. If it later spikes to 200, the short's loss keeps growing with no ceiling in sight.
This is not an argument against shorting — it is a widely used, legitimate technique. It is an argument for always defining your exit before you enter, so an unlimited theoretical risk becomes a defined, survivable one in practice.
Start simple
A complete beginner can happily ignore shorting at first and focus on understanding how prices move. There is no obligation to use every feature a platform offers, and adding shorting before you are comfortable simply doubles the ways to lose money.
When you do short, treat it with extra respect: smaller size, clear stops, and no holding a losing short "hoping" it turns around while the loss quietly balloons.