@JS3909 wrote:
...I did a lot of research on Google for videos which have been helpful for filling out these complex forms
You can use the IRS instructions at the link below but, frankly, it is one huge, potentially disastrous, mistake to try and prepare a 2016 return with a Schedule C by hand. You really should be using tax preparation software for that purpose.
https://www.irs.gov/pub/irs-prior/i1040sc--2016.pdf
