Useful Links
Astronomy forums
Stargazers Lounge UK based forum. Highly recommended and a great source of advice from experienced helpful hobbyists
Cloudy Nights International forum.
Astronomy Shed UK based forum with some excellent tutorials
Retailers
Weather
Tools and Resources
Heavens Above - ISS and satellite positions
12 Dimensional String - Field of View calculator
Astronomy Tools - A range of useful online calculators
NASA's APOD - (Astronomy Picture Of the Day)
CalSky - Useful calculators