is it possible to trading without capital?
Without capital here means without money that come out from your pocket as capital.
If possible, i want to learn from very small thing in trading, yes without money on my pocket or my bank account.
Are you good at trading?
If yes, you can try lending services. But if you aren't good in technical analysis and don't have any prior experience with trading, then learn it first. You can ask people for $10-$50, but what will be the use if you don't know trading and ultimately you gonna lose everything. Learn TA first, then start with paper or demo trading before starting with actual trading with actual money.