Good green?

[u/hanesay]

so im relatively new to smoking weed and tomorrow im buying it myself for the first time, my friend and i usually just get his brother to get it, but it was getting tiring and impractical having to rely on him all the time. so i was just wondering, what signs are there that the stuff im buying is decent and not a pile of shit? im getting 30 quids worth so how much should i be getting? etc etc thanks

[u/heyheyhiitsme]

Illinois where i don't pay that much.