There are quite a number of websites dealing with Irish Pipes, and it should not be too hard finding out information about the instrument and its music. Here the links to some useful and informative sites to start off with. Other ones will be added over time.
Na Piobairi Uilleann: The Irish Pipers' Club - www.pipers.ie
The central site for the Irish pipes - indispensable for piping aficionados. For access to some of the sections membership of Na Piobairi is required.
Uilleann Obsession - www.uilleannobsession.com
A informative site with news and useful links
Uilleann Forum - www.uilleannforum.com
Discussions on pipes-related issues, lists of instruments for sale, articles.
Dutch Uilleann Pipers club - www.nvup.nl
Rob van Dijk's personal website - www.thescholar-uilleann.nl
London Uilleann Pipers Club - www.uilleannpipersclublondon.co.uk