Quite a few people jump into this business and then worry about giving out their personal home and/or mobile number.
Here is a great alternative . . . best of all, it is free to use!
Google Voice provides you with a “static” number that looks and feels like a real phone number (for your area) and, in turn, you can set that number up to forward to your home and/or mobile number.
Learn more by clicking/touching this link: http://www.google.com/voice
Here is a great video that touches on the basics of Google Voice, yes, it is fairly simple and straight forward to obtain and set-up.