Hello all you knowledgeable bike peoples,

Within the past half-year I have entered the bike world riding daily back and forth to college. I made what some would call a mistake, taking advice on my first real bike purchase from my fixie-riding hipster frends. I acquired a "refurbished" (cough) single speed Raleigh Record from a less-than-reputable bike shop, and have had a few minor issues along the way. Now that I've been riding, I know that my preference would be for a bike with a range of gears.

My question is: What will it take to throw a set of gears on? I'm not looking for a gazillion gears, just something simple with a few options. I'm thinking a single gear in the front, and a set of gears in the back. I do need a new crankset because the one that came on the bike is a ugly POS. Do I have to get a matching set of some sorts? Do I need to get a whole new rear hub?

I'm not trying to spend a ton of money, just trying to get a better setup.

I appreciate your advice, thank you in advance.