Shops

8 Ball Store - The official EPA shop.
UK Pool - The UK Pool shop.
Billiards.com - A vast array of discounted products from every major manufacturer.

Publications
World Pool Magazine - The first edition
Snookered Magazine - The April 2010 issue of UK and Ireland's Snooker and Pool e-magazine
Snookered Magazine - The April 2011 issue of UK and Ireland's Snooker and Pool e-magazine

Coaching
8 Ball coach - Professional pool coaching online

Other links
Longmans Software - Some free software on this link
Charity Exhibitions - Pool-related fundraising ideas with free exhibitions and free tables
Pool Student - For Serious Students of all Pocket Billiards Games
CCR-FM - Canalside Community Radio (my Dad's a DJ; guess which one)