Ready References
A Guide to Backyard Astronomy
Dealing With Dew
Latitude is Everything
AAVSO: Services to Astronomy
Basics of Motion Control
Hardware Hunting
Preventing and Handling Chemical Accidents
Ready References A Guide to Backyard Astronomy 
Dealing With Dew Latitude is Everything AAVSO: Services to Astronomy Basics of Motion Control 
Hardware Hunting 
Preventing and Handling Chemical Accidents