Re: Few questions
Nakhla is tobacco. If you want an herbal shisha there is a company called Hydro which you can get through EBAYgirl she is on this forum as well as on ebay and you can use paypal. A lot of people here have tried hydro, and i believe there are a few video reviews as well as typed reviews on it.
Also, for the copper stem or brass stem. It is perfectly fine to smoke out of these. In fact to my understanding Brass is the preferred metal to have.
(*Disclaimer* These are my opinions and mine alone. It does not reflect the opinions of others and is based on my personal smoking enjoyment and experience)