I laid down about $20 at a friend of mines house (this was back when I was living in Missouri, where Salvia is a Schedule I drug) and bought a gram of 20x.
Although we used to be friends and that turned into a business relationship (both dealers in hallucinogens), he offered to be my sitter as I smoked about half of it in this huge bowled bong he always kept handy.
It's harder than hell to describe the effects of the diviner's sage. It's trip is so unique. It's no party smoke, I'll tell you that right now. TV will just hurt your ears, as will loud music. That is if the trip doesn't tear you away from this plane of existence. It's almost always, for me, an organic trip. Leaves, ivy, a green goddess, animals, etc. It's like connecting with the world itself.
Anyway, just be safe with it. ALWAYS HAVE A SITTER. You can never know when you're going to breakthrough...HARD. The one weird thing about it is that it's very hard to tell yourself it just the salvia, because for me it usually makes me forget I even consumed it.
For more info, my main suggestion is erowid.org. They're wizards. You can find FAQS, experience reports, etc. on salvia and everything else you can think of.