Hey xevio, welcome to BL! You came to the right place.
I concur with SheWasLvL18's post.
My advice to you (or anyone that is opiate naive) would be to simply research the drug at hand. BL has endless amounts of testimonials and information but also research outside of BL, too.
Also, for dosing, there are multiple variables that can play a part in dosing such as: weight, height, when you ate your last meal, if you have any other drugs in your system, etc.
I would suggest starting with 10mg hydrocodone as a first time. I think 10mg of hydrocodone will be a good "entry level" buzz. but most importantly, it is a safe dose, too. Just be sure not to mix it with anything else.
I look forward to hearing how it went.
Sincerely,
LS