Well, you freeze you flower and shake in the freezer for 24 hours along with the jar you are going to use to make the oil. When ready, wear gloves as it is cold. cover the pot with the booze. set the timer shake 3 min. Pour that out into a jar and repeat. We do a big jar, but you can use a pint or quart or whatever works. If you have more frozen pot do it again. If you are done, then strain the light green liquid to get out any pot. This is when i put mine in a distiller to reclaim my booze.
Put that in a double boiler and very gently boil off the booze. What you have left is black oil Use a piece of rice size. I will see if i can find a tutorial. So there is a lot on this site if you search RSO, you will get a few more. Let me know if i can help.