You have to have one of the perks that allow you to do it. If you have the perk, draw your arrow, then hold the secondary weapon button.
There is only one Nightingale bow in Skyrim
If you mean while it is in your inventory, it's probably the marker to say your character has equipped the bow but is not currently weilding it.
Technically, no. But you can go 'Bow Fishing'. It's basically fishing with your bow. Or you can swim around and catch slaughterfish.
By plucking the strings, drawing the bow acros the strings while fingering the frets.
No, you need Auriel's Bow, and the corrupted arrows provided by Serena, to block out the sun.
yes
It depends on how you like to play. I prefer bow myself, and argonians are quite good at both naturally.
yes it does because crossbows are especially good against vamps.
A drop bow compass permits the center leg to remain stationary while the pen or pencil rotates around the center shaft and is used especially for drawing small circles.
Yes, if you strike an enemy while you are sneaking and undetected, you cause double damage with a bow and triple with a melee weapon. Sneak's perks can increase that, such as 15x damage with daggers.
the audience if you draw one if not lets just say the front
It is possible. not sure why you'd want a million though...you can have infinite arrows with the summoned bow.