Abstract: A system for trading commodity futures contracts and options is provided. The system includes a user account system that has user-entered trade data, such as to buy a commodity futures contract for copper. A user information system is connected to the user account system and provides commodities trading data to users, such as a description of what a commodity futures contract is, and how copper prices have historically fluctuated. A trading controls system connected to the user account system receives user account data from the user account system and inhibits the user-entered trade data in response to the user account data.