Model Railroading
Calgary Free-moCN Prairie (great model railroad blog)
DCC Guy
Echo Valley Railroad Guild (the club to which I belong)
Model Railroad Hobbyist Magazine
Model Railroader Magazine
Model Railroad Hobbyist Acrylic Painting Guide (excellent free guide to the use of acrylic paints; need to subscribe to MRH but it is free to sign up and they don't abuse your email address)
NMRA (of which I am a member - very worthwhile to join)
NMRA 6th Division, Pacific Northwest Region (Alberta, Saskatchewan, Northwest Territories)
Railroad Model Craftsman
Ham Radio, Electronics & Projects (ham radio is not a hobby of mine but John's site contains lots of interesting information)
Living On The HorizonVendors I Like (all are very responsive and are easy to deal with on-line)
Digi-key (Canadian)(for a huge range of electronic components)Fast Tracks (Canadian) (hand laid turnout jigs; outstanding results)
Hobbylinc (US)(great selection and prices)
Lee Valley Tools (Canadian) (high quality products, many of which are unique)
Micromark (US) (outstanding small hobby tools; also have model railroad products)
Model Train Stuff (US) (great selection and prices)
Mouser Electronics (Canadian)(like Digi-key, a huge range of components)
Paul's Finest (Canadian) (excellent rechargeable 9-volt batteries; perfect for Digitrax controllers)
Powerwerx for Anderson Power Poles (US)
Rusty Stumps Scale Models (US)(many unique items)
Trainjunkies Model Railroad Backdrops (US) (can do up to 100 feet of backdrop without seams)
Walthers (US)(huge selection)