Marijuana
Cannabis is Illegal in Los Santos However, is known to be grown in specific locations. It's not worth as much as the others but easily accessible without any work.
Collecting (Cannabis)
To collect Cannabis head over the the Weed Field. Once you have arrived walk up to a plant and Press E to begin harvesting. Repeat this untill you are finished. You can store them in a vehicle by looking at an unlocked vehicle, pressing Y and dragging the item to the right hand side
Processing (Marijuana)
To process the Cannabis into Marijuana, head over to the Weed Processor, when in the correct area you will have the ability to press E to Process 1 Cannabis into 1 Marijuana. Repeat untill complete.
Cocaine
Cocaine is a rare but highly profitable drug run in Los Santos, It's illegal and leads to lots of people searching for the field and the processor which are kept very secret.
Collecting
Find the right field with the Coca leaves in can be quite the challenge. When you find the plants you are able to collect it by pressing E. You can store them in a vehicle by looking at an unlocked vehicle, pressing Y and dragging the item to the right hand side
Processing
The cocaine processor is a small but powerful laboratory, hidden so it's kept out of the way of any curious passers by. Head inside and into the circle and press E to turn your Coca Leaves into pure cocaine.
Meth
Meth is the most valuable drug in Los Santos, It's highly illegal and draws alot of attention. Trying to intercept and locate the Pseudoephedrine location is difficult but can be worth a fortune upon doing so.
Collecting (Pseudoephedrine)
Collecting is risky as it tends to be washed up from sea. This means that you sometimes have to get yourself wet in order to get your hands on the products. Once you have got to one you are able to collect it by pressing E. You can store them in a vehicle by looking at an unlocked vehicle, pressing Y and dragging the item to the right hand side
Processing (Bag Of Meth)
Locating a working Meth Lab can be very challenging but needed to process the Pseudroephedrine in to Meth. Once you have located a working Lab head inside and into the circle and press E to turn your Pseudoephedrine into a Bag Of Meth.
Selling and Money Laundering
Selling your Drugs
After you've collected and processed your drugs, it's time to sell them for big money, right?
Now you need to find someone to sell too. Either locate a known Dealer in the city or Speak to on of the many people that may be interested in buying some Product.
Building more connections may lead to you finding better selling options - potentially slightly less public
Laundering your dirty cash
After you've gotten your dirty money from the dealer, it needs to be laundered into 'real world' cash that you can spend and add to your bank account. There's some facilities around the island that may be of use, but be wary of the thieves about that are after your 'hard earned' cash.