well even though am a bit doodle in the web making field, i suggest you have a whole lot of information ready at hand, like PDA models,make year,specs etc.
but it's pretty much easy if you want to make only for the newer models so u have have the lard for inofrmation.
you can make your site have 3 or more pages, preferably for downloads, information,a form (optional),and some bunch of other stuff but thats up to you !!