You need to understand basic day trading terminology & concepts to build your foundation. You can follow me on Youtube to get free education! Join the community of thousands of followers on YouTube and begin studying the free content we post on a daily basis. This is the beginning of your education. You need to study the markets, analyze charts, and learn the strategies professional traders are using every day.
Assess how much capital you're willing to risk on each trade. Many successful day traders risk less than 1% to 2% of their account per trade. If you have a $40,000 trading account and are willing to risk 0.5% of your capital on each trade, your maximum loss per trade is $200 (0.005 x $40,000). Set aside a surplus amount of funds you can trade with and you're prepared to lose. Remember, it may or may not happen.