Yes another post by me...I have so many questions...

now regarding crank & cog ratio. I live in seattle...on capitol hill...and I have to deal with lots of hills...high, medium and low on every ride I go to...even to the grocery store..what is a good ratio to have? I'm not this super athletic person but I"m also no weak...and I don't mind sweatying too much but I'd like to not to have to walk my bike up a hill or be pedaling SUPER fast going down a small hill. Any suggestions?