How to build a mobile website — from SmashingMagazine.com

Conclusion:
As the worldwide shift to mobile continues, handheld device support will become increasingly important. Hopefully this article has left you with both the desire and toolset necessary to make mobile support a reality in your websites.

Although mobile occupies a significant chunk of global web browsing, the technology is still very much in its infancy. Just as standards emerged for desktop browsing, new standards are emerging to unify mobile browsers. This means that the techniques described in this article are only temporary, and it is your responsibility to stay on top of this ever-changing technology.

In fact, the only thing in web development that remains constant is the perpetual need to continue learning!