How to replace the lower radiator hose?

My low coolant light comes on every other day. I fill with fluid and then drive a few more days and have the low coolant light come on again. I only see a little fluid on the passenger side bottom hose. It has overheated about three times since this started. I want to replace the lower hose and see if this helps, but I don't know how. I could surely use some pointers.