Can I zap myself biasing my tube amp??

Get some help. If you have never done this before, it can be very dangerous. Just the fact that you are considering rubber boots tells me that you may be unaware of the precautions needed. The place you want the insulation is on your hands. You may not get a second chance if you make a mistake. A tenth of an amp is all the current needed to be fatal.

Only if you do it orally.

All the way to a wooden Box.

BTW don't think that having an amp off is protection against sticking your mits in the wrong place. If the capacitors are not discharged you can fry as easily as if the thing was plugged in as they are energy storage devices and that energy remains stored waiting for your knock on the door even with the amp off. That said there are thousands upon thousands of tube amps in service and they are regularly biased by their users without incident. Might I suggest calling VTL to get the manual if you do not already have it. Review it thoroughly it will also tell you which scale to use on your multi-meter and the correct bias voltage or amperage. I would imagine that VTL would also be more than helpful if you do not clearly understand any of the procedures outlined in the manual.

mythtrip... i just got the VTL IT 85, and wasn't sure about biasing either. it wasn't a big deal! i just read the directions a couple of times, and went to radio shack with the catalog numbers they referenced in the manual. i got a little plastic screwdriver at radio shack too. total cost was about $35. got home, easily took off the cage, and everything was clearly labeled on that map of the inside of the amp.... it was really easier than i thought.

good luck..