#7 Do Research On Brokerage Charges
With there being frequent transactions in day trading, there are high brokerage fees. Do a thorough research on what trading plan you want and how much the transactions in that plan will cost you. If you plan on working with one-two trades daily, the most suitable plan is per trade basis brokerage.
If you have high daily trading volumes, choose staggered plans which offer you lower effective cost with high volumes, or fixed plans that offer you a fixed high charge for unlimited trades.
Keep in mind most brokerages have $0 commissions on share trading however options trading still have various cost associated.