I know dispatchers have to worry about the weather and route of flights, but how did you learn about weather practically?  I know you can read books about the clouds and fronts,etc, but practically is there any way?  I want to be able to read the weather like the 121 dispatchers, even though I fly general aviation.  Do you have any good sources of information?
 
Also, how long is the ATP Written valid for?
	
		
			
		
		
	
				
			Also, how long is the ATP Written valid for?