Satire and humor helps you learn all about marijuana as medicine from an old-timer who smoked pot every day for over 40 years to cure his glaucoma. The fact that he can still see out of one eye proves pot works at least 50% of the time. Learn how to grow pot, protect your crop from thieves, roll proper joints, avoid arrest, get a medical marijuana ID card with phony illnesses, drive stoned safely, raise your IQ, and much more. Google Grandpa Ganja for more info.