Start with your working day
Decide where you expect to research and manage orders: desktop, browser or mobile. Compare the documented interfaces and access requirements. The MetaTrader 5 documentation provides separate references for terminal and web use; check the version actually available through the account you are researching.
Make order controls a priority
Look at how the platform presents order type, volume, price and expiry before submission. The cTrader order documentation is a useful reference for its order types and parameters. Read the instructions for the specific platform rather than assuming that controls work the same everywhere.
Read features in context
Build a shortlist of charting tools, watchlists, alerts and account-history views that matter to your routine. Record unavailable features as unknown. A polished interface is only one part of a broker research process.
Keep the official documentation close
Use current vendor help alongside the account terms and cost schedule. The official documentation below provides a starting point. Availability and settings should be checked for the platform version and account in question.