You can easily set up a brokerage account by completing and submitting an online application or mailing a completed form that can be downloaded from most brokerage firms’ websites. The form asks for basic information about yourself, and may also ask you to fill in some personal financial information, such as your annual income, net worth, investment goals, likely frequency of trading, etc. You may also be asked to associate your new account with another external bank account, or use the firm’s banking products, if available. You may also be asked how you wish to keep your uninvested cash on hand. Many firms will give you different choices for how you wish to save or invest this cash, used to execute trades and invest proceeds. Many firms will require some sort of minimum deposit to begin trading, so you should check with each individual firm.