Information Paradox, Black Holes and Interdimensional Travel

If a virtual particle gets taken in by a black hole, wouldn't it increase it's mass? How do virtual particles actually decrease the mass of a black hole, it doesn't make sense. Is interdimensional travel possible in the near or distant future? What would you see as you cross the event horizon of a black hole? How long would you survive if you crossed into a black hole's event horizon? How would you destroy the universe? Is that even possible? If there is a thing as a white hole, then you'd be shredded by it's repelling force. I'm assuming we've never found a white hole yet at least and wanting to know if it's possible that a white hole is the opposite end of a black hole in another universe? If you're going to increase the speed of a spacecraft near a black hole, would you do so or would you try to get information from beyond the event horizon? Could you even get information if you were to put a camera inside the event horizon? On Doctor Who that Davros with the Daleks created a reality cannon though woulhe universe and the muitverse, is something like that possible? How could that be done? In the Back to the Future trilogy, how many alternate timelines were created?

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