Hi Sunland05,
What method you choose, and which ones you should avoid, depends a lot on your specific needs and medical history. If we're talking in terms of pure effectiveness, the implant or IUD are the top methods, since they're over 99% effective even with typical use. What I suggest is going through this article and seeing which method(s) look like a good fit for you, based on things like whether you want hormonal or non-hormonal, how comfortable you are with certain procedures, and so on:
Birth Control Bingo!. If you have questions about those methods you like, we're happy to talk with you about them some more.