Yes, even light. Nothing can escape them after passing the point of no return.
Absolutely anything and everything. They may even suck up time(!!!!!), but no one knows for sure.
yes
Everything can somehow provide energy, except for black holes, which only suck up energy.
Yes, all black holes 'suck stuff up'.
Black holes. They can be so large that they can suck up universes at a time
Yes.
It is known what will happen. You will get sucked up! But before you get sucked up, Black Holes give flicker of black hot gas. Black Holes have so much power that they can't control it. So that's why they suck up everything in their path. Fun Fact: Black Holes are actually stars that died and contain so much power!!
Black holes are basically highly compressed massive (has lots of mass) parts of space. The large amount of mass warps the space time around the black hole which causes intense gravity that suck everything in.
There are hypotheses about so called 'virtual particles' that may travel faster than speed of light, and hence are not sucked up by Black Holes. Also, Black Holes cannot suck another bigger Black Hole, when they meet a bigger one, they get sucked up rather.
White holes are theoretical regions of spacetime that expel matter and energy outward, the opposite of black holes which pull matter in. They do not suck up objects like black holes do. However, there is no observational evidence for the existence of white holes in the universe.
A black hole will attract you through its gravity - just like any other object will.
Black holes do not emit light, so black holes can not be seen this way. But black holes emit X-rays, but stars are not hot enough to emit X-rays. When black holes suck up stars, energy goes to the black hole, and come out as X-rays.