Changing strings is nothing to fret over! It's a fairly simple process unless you've got a floyd, evertune, or kahler. Ibanez Gio's come from the factory with 10-46 gauge strings from what I can see. Strings are a personal preference. Personally I have 10-52's on 2/3 of my guitars which are for E, Drop D, E Flat, and D Standard, and Drop C#. If I was going to leave it in Drop C# I'd bump up the gauge for more tension since that's my preference. I believe Ed and Ashley prefer lighter gauge strings on their guitars for ease of play. If you like what you've got on now, pick up a pack (or two or three, I broke a few strings the first time I changed strings. It isn't unusual to do) of 10-46 gauge strings. Brand wise, I use Ernie Ball slinky. They're affordable and easy to find. The guys from Avenged use Ernie's as well. Daddario is reputable, as well as Elixir. If you're feeling experimental, maybe pick up a pack of 9-46 or 9-42's if you want something lighter that allows for easier and larger bends. Keep in mind that with changing gauges you may want to adjust the intonation on your guitar. It's pretty easy as long as you have the tools for it. A tuner and a screwdriver that fits the adjustment screw on the saddles of your guitar.