I hope you’ve got a thorough understanding of the ins and outs of commodity trading. Now that you’re looking for a demo account, there are numerous brokers who are licensed and reliable offering demo account trading options on platforms with technical tools like margin calculators. To name some, there’s ■■■■■■, Avatrade, eToro, forexcom, ICM. Their demo accounts are absolutely free of charge and you can practice your trading skills on them for as long as you want. These accounts are exact replicas of the live accounts and offer the traders like us real market conditions and prices.