There's  a lot of ways to earn your 1st bitcoin. Many sites are paying bitcoin for the service rendered of the person ,If you have good skills in programing , graphic designing or high writing skills you can offer that and they will pay you in bitcoin. I think the most easiest way to obtain bitcoin is to buy at any of your local trusted bitcoin exchange. You can also go around in the forum, you can surely find helpful threads that will help you to obtain more and effective ideas how to have a bitcoin.