SlimShadyJB,
I'm no expert in witnessing, but here's what I know.
First, just by living your life in Christ, you will witness to people. They will see the difference Christ has made in your life, the joy and peace you have, and the love in your heart!
Second, pray for opportunities to share the Gospel and ask the Spirit to guide you.
Third, there are fun things you can do to express Christ in your life. You can wear Christian t-shirts and listen to Christian music. However, be sure to be authentic and sincere in your love for Christ.
Fourth, sharing the Gospel can be intimidating. I definately recommend lots of prayer. Also, I would seek out a church with like minded Christians who can encourage you and help you.
Fifth, I recommend you spend some time studying ways to share the Gospel. Memorize Scripture and practice. There are books and studies you can read to get an idea what to do. I know my own church offers a class on how to share.