Some of my favourite resources are listed below. Hope you find them useful too!

usability testing books

Rocket Surgery Made Easy by Steve Krug

usability books

Don't Make Me Think by Steve Krug

information architecture books

Information Architecture for the World Wide Web

websites

boxes and arrows for information architecture

peer groups

Northern User Experience (Yorkshire and Manchester)

conferences

ThinkVis for Affiliate Marketing

BarCamps in general

north yorkshire

Pecha Kucha (details to follow)