learn commodity trading

by profession i am dealing in barcode printers ,barcode scanners , LABEL GENERATING SOFTWARE ,mrp and barcode labels, security and void labels, consumables like thermal transfer ribbons for label printers. I am Delhi based. i have an trading account with reliance. not a very active trader...

hello , i want to learn the basics of commodity trading . can someone please suggest where can i open an online demo account and practise trading , like the ones available for forex demo accounts. regards