Recommended Links

These are the links that I use most often myself.
With Google you can find just about anything on the internet
My own web site

Observing Weather:
Clear Sky Clocks: Predicted cloudiness, transparency, and seeing for sites all over North America
Environment Canada 5-day forecasts
The Weather Network: more detail short term, longer predictions long term
Animation of most recent infrared satellite observations (moisture overhead)
Animation of most recent radar observations (precipitation)

My favourite online discussion groups:

Astronomy associations:
American Association of Variable Star Observers
Association of Lunar and Planetary Observers
Astronomical League
IAU Minor Planet Center: asteroid data
JPL comet page
Royal Astronomical Society of Canada
Saguaro Astronomy Club: best lists of deep sky objects and double stars
Students for the Exploration and Development of Space
The Astronomy Connection: great beginners' information

Canada-Wide Astronomy Buy & Sell
Kendrick Astro Instruments: very complete Canadian dealer
Orion Telescope & Binoculars: one of very few US dealers who ship to Canada

Equipment reviews:
Cloudy Nights
Ed Ting's excellent reviews