I had a GIANT mountain bike in college that never went up a hill or off road. It was a very basic bike and I loved it. It's sitting in my parents basement and I'm convinced someday I will get it back.

I would recommend finding a local bike shop and talking to them. They generally are very helpful and will find the right bike for you. Be honest with them and tell them you are just starting out and that you don't want a premier bike but a good solid basic bike.

As a gauge, I paid about $300 for mine at the time. I think you will be able to find something in your price range that is a good beginner bike without much problem.

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When you get to the end of your rope, tie a knot and swing.