Regulator

Government oversight body. Tier-1: ASIC (AU), FCA (UK), CySEC (Cyprus), NFA (US).

A tier-1 regulated broker segregates client funds, has a compensation scheme, and faces real oversight. Unregulated offshore brokers are legal but offer zero protection. Regulation status is the first thing to check.

Learn to actually use Regulator.

Definitions are the easy part. The free first five modules put this on a real chart and make you do the work. No card required.