Strategy for making a mobile version of an existing site? [closed]

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You have 3 choices

  1. choose a Responsive Theme for your site (Responsive adapts for different screen sizes)
  2. choose a plugin (such as WPTouchPro – which is both plugin and theme)
  3. build a second site which you access at m.example.com, this duplicates all the content and has its own theme

… there is a 4th option … being polite… there are dozens of great books and websites about WordPress & Mobile Web Development like this one from Wrox