Good luck on trying to tune that thing yourself, it's going to take forever. I recommend that you find someone to do it for you. Usually, tuners will also fix any broken keys that you may have as well. Though, that one looks like it's in pretty good condition, how does it sound?
Sounds fine accept for being out of tune. It will take a long time to tune but I will have fun doing it and the payoff will be so worth it. I could pay someone to tune it once for $130 or I can just buy a 60$ tuning kit and do it myself forever.