You can easily fill : - your total account (could be dollars, bitcoin, euro…) - the risk of your strategy (Traders often use 2% so if you lose a trade, you accept to lose only 2% of your total account) - stop loss (the lower price at which you accept to sell before losing too much) - buy price - take profit (the price you want to sell) You will see the amount and quantity you can bet to respect your trading plan.