Richard Feynman, the late Nobel Laureate in physics, once said, "If you think you understand quantum mechanics, you don't understand quantum mechanics."
Quantum computing is an emerging field and difficult to understand—and to explain.
These videos provide a great overview. In the end, what will matter is the people who come together to unleash the power of this technology to profound effect.
CNN: Physicist Michio Kaku explains quantum computing to Fareed Zakaria
Physicist Michio Kaku explains history of computers
The End of Encryption: Michio Kaku and Neil deGrasse Tyson