I love it when I see another new rider just starting out! I was in your place just 5 months ago. I live in a steep, hilly area and just could not ride anywhere from home so I threw my bike in the car, rode down to the flats and rode there. If there is any place that is flatter that you can drive to for the first month or so, I highly recommend it. I found that I was able to build up my strength and stamina so that after two months, I could start trying the hills. I agree with one poster who said if you can ride 3 times a week, you'll see results fairly quickly. It is absolutely amazing. If you can, go over to bikejournal.com and start logging your mile(s) now. You'll be surprised how quickly you start to increase those stats! And hey, in 5 months, you'll even have leg muscles!!!