Laws:
I've only added the California Laws for now, because well, I live in CA, and intended this site for a lot of CA residents.go to www.norml.org and find your state marijauna laws. Anway:
California marijuana laws http://www.norml.org/legal/state_laws.shtml
Possession under 28.5 grams, $100 fine, no booking, if you can show ID and appear in court.
Under 28.5 on school grounds while school is open: $250 fine, 2nd offense, 10 days and $500
Over 28.5 Grams,0-6 months, $500
Possession for sale, example: having a lot of extra baggies or scales: 16 months, 2-3 years probation
Growing: for personal use: stay of imposition of the conviction, drug education, charges dropped.
Growing for sale: example: baggies, scales: 0-16 months, 2-3 years probation, no specified amount.
Selling, giving away, importing, or transporting into California: 2 - 4 years.
Possession or cultivation or transportation is legal upon a doctor's recommendation or approval
I just added more info on CA. laws. click here