How do I find my username
I'm hoping someone can help me. My step dad picked out and set up a new computer for me but set up my username as my old name, forgetting I had changed my last name. I wanted to change it and looked through a couple of different threads from others who had done it and followed the instructions. Once done, it said it would take 24 hours to take but the name appeared to stay the same. Now, when I try to make any changes at all within system preferences, when it asks for my username and password, NEITHER work. I can't figure out what my username is and it doesn't provide any prompt for a forgotten user name or password.
To top it off, as I live abroad ,when I go to apple support assuming this is something I should easily be able to live chat with someone about, they tell me the only option for support on a mac is to bring it in for repairs. Absolutely ridiculous.
How do I figure out what my username is so I can make changes to my own **** computer? System is OS X El Capitan version 10.11.