A lot of this info is available online, but you should plan to have an actual accountant who you can bounce questions off if needed and ultimately help you out come tax time. I’d avoid H&R Block or any of the walk in tax places, see if your parents or any of their friends have someone who they could recommend for business taxes.
Another point - if you are making very little money and purchasing things to get your freelance self off the ground (computer, Wacom’s) that are big ticket items and you end up running at a loss, be very good about keeping track of your expenses. It is worth getting a credit card specifically for freelance expenses so all of your receipts are kept in order away from your personal expenses.
Running at a loss for 2 or more years generally sets off a red flag with the IRS (if you are in the US) to trigger an audit.