TBH, I don't think anyone knows how to "hack" a twitter. I mean ffs. I can't even get back into my own twitter after my friend got scammed for it. Twitter support is a joke. People do know how to reset emails. I would edit your thread asking if anyone knows how to reset emails lol. Just find out the persons email in advance
It depends what kind of email is connected to the account . If they have Yahoo you are in luck . Yeah but the only way to jack a twitter is to reset the email , or if its inactive you can social engineer support saying you have a copyright on the account name .