After you file

Go to the IRS website where you can get all the information you will need.
Look for the 1040 (and 1040-SR) Instructions.

 

www.irs.gov

 

In the old days, IRS would mail this to everyone.
Now, you have to go online and find it yourself.

IRS Free File program makes tax prep software available for no cost.
The software includes all the forms you will need and will guide you.

 

You shouldn't need to pay anyone to do your taxes for you, unless you are totally form-challenged.

 

@Abdufetah