Take 0.5mg, wait half hr or so, take another. I agree not to go over 1mg first time - beyond that, you'll likely either fall asleep or black out (as in, no memory, like an alcohol blackout)
Benzos are not crosstolerant with opiates, so you have absolutely no tolerance to them.
Do not expect intense euphoria - it's closest to alcohol, but maybe a bit more clearheaded (and of course no hangover), and benzos in general are more subtle than alcohol.
Don't mix with alcohol, as alcohol effects you much more strongly on benzos, and the combination can be very dangerous (and at best will probably make you black out and do dumb shit). Don't take benzos too often, as you can get a tolerance pretty quickly with them, and heaven help you if you end up addicted.
Oh, and they also intensify the effects of opiates (both the sedation (desirable) and the respiratory depression (not desirable). They're sort of notorious for causing OD's when mixed with opiates. I recommend you NOT mix them with those hydrocodones you mentioned.