You choose a bank, open a new account and put your money into it. The savings accounts pay you interest for the use of it, but you are free to withdraw any or all of it any time you want. Checking accounts allow you to write checks. You can have either or both accounts. Here are a few tips to help you decide.
Banks have different checking account charges but they tend to be cheaper.
You can prove purchases you have made for your business and have a printed report of income deposits for tax purposes. It takes time and attention to detail. It is important for you to promptly notify the bank if you lose your checkbook to avoid being charged for unauthorized checks. It is easy to open either a checking or savings account or both. Check into any deals.