.25 mg is the standard beginning dose level for Xanax
If never used before and you're looking for that mild "buzz" - so to speak - then a couple of those will work fine, especially if you mix with a few drinks.
But don't do more than .50 if drinking and most certainly do not operate a motor vehicle.
===
As for the second quip, I myself first encountered that drug by using a "bar", which is 2mg that can be easily broken into four parts.
That's very powerful and about 90 minutes later, I fell dead asleep while making out with the SheBar
She reports she had to shove me off of her because I passed out in mid sentence while kissing her neck and bragging about what a stud I was about to be.
(true....and Sad...story)
I ended up sleeping for solid eight hours and I though I Can't Verify It Yet, I think she may have ended up making like Carrie Prejean, if you know what I mean and I think you do.