Whats the main differences and where can I buy them?  Can you buy PG or VG by itself or is it just glycerin by itself?  I kinda know the differences between VG and PG and how they are both glycerin but if I'm cutting it then will I just get glycerin?  I'm getting a tad bit confused . . . 











 
Any help would be great, even links to other threads. Thanks.
	
		
			
		
		
	
			
			





Any help would be great, even links to other threads. Thanks.