i cant give much advice.. since i aint a dealer (im jus a middle man) but..

get yourself some scales (preferably digital not some cheap one you can get for $3.00 they mostly always wrong anyways) so you dont end up ripping yourself or your custs off.

tell your custs to keep your name low (you dont want pigs raidin or knowing your even into weed) or if you got a nickname use that instead of your real name.

get custs you know n trust you dont want heaps of strangers comin at your house n leavin 10- 15 mins later (is a bit obvious n your neighbores proberbly tell the pigs)

since you gettin a half pound once every month or 2 months or somethin makes your bags decent so you got a constant flow of happy custs (dependin on how much deals you make you definantly got more then enough bud for yourself)

make it clear to your custs dont speak your name to anyone (i cant stress the importance of this cause if your name gets leaked to the pigs you be in jail for a while dependin on your laws where your at)

theres a few more things but i cant think of any right now i be back soon to give some more if i can remember if not good luck.

ive kept low from the pigs for so long.. they dont know i smoke bud or nothin havnt had trouble wit them for a couple of years (im 16 now) last time i did was cause my mate caused some shit at the hospital n we got banned from there fo life n i aint supposed to go in unless is a life n death situation (i dont care i still go in anyways to visit people). pigs here target weed smokers so make sure you be careful.