• If for example, I have a "normal" web page, working with HTML + AJAX, that renders well on desktop browsers, do I need to write a specific mobile version of the website? This is what is JqueryMobile for?
• If I am right at the first point, how do I send the user to one or other version of the website?
• If I'm not right... what is it jquerymobile for, and how should I implement a version of my website that renders well on mobile devices?

If there is any getting started guide regarding to this, please refer it! :-)