Disabled iphone? Repair

Okay so I bought this used iPhone from a friend and I am assuming it has been factory reset because I'm at the very beginning of this process where once the iPhone is charged it says disabled slide to the right as I do that it wants a passcode right away and it's flashing the countries or the language and read above the passcode it's been a few years since I had an iPhone and I do remember this being the first few steps however I think if my memory is correct I have to still have the original Apple ID and or passcode I also remember something about plugging it into the computer once I have my Apple ID account created and I'm locked into iTunes and it's downloaded please help me enable my disabled iPhone.