Is a way I can print out my Federal 1040 form? I can't seem to fill it out online. Also, in regards to that, which part of the form focuses on self-employment? Thank you.

I want to fill out my Federal 1040 form under my TurboTax account as self-employed. I was just trying to remember which part of the form I need to fill out for self-employed or independent workers. Also, do I need to file my taxes before filling this form out? I thank you very much and look forward to your response shortly.