When, as a layman, I read or hear about the Big Bang, it generally comes to the same issues: massive release of energy, very high temperatures, very fast expansion, questions about what came before the Big Bang and so on. Yet, there are some issues that, at least to me, appear to be left aside. The first one concerns the energy itself. As far as I know, energy has to be somehow produced, by means of some transformation process. In other words, there are no "pools" of readily available energy floating around somewhere. On top of that, we generally add a word to energy, such as nuclear, or wind, or kinetic, and so on. Now, when it comes to the Big Bang, it is only "energy" with no specification of what kind and how it happened to be there. The second issue is also about this energy. We, humans, experience some difficulties to store energy, which would rather escape and dissipate itself. Yet, the Big Bang energy, if it can be called like this, was very disciplined and somehow remained locked in a single point. How could such a huge amount of energy accumulate itself without blowing away into what we call the Big Bang at a much earlier stage...or was this energy somehow "created" all at once? The last issue is about the temperature in the very very early universe, just a fraction of a second into the Big Bang, when energy was released into newly created space. What exactly was so hot in this still empty space? In other words, what was reacting with what in order to produce heat?