Obviously you will not be the first person to ask this. After all, philosophy, science and theology have quite a long history. But if you are interested in what we as a species have come to know (i.e. can personally experience) up to the present day with respect to these issues, you have perhaps come to the right place.
And maybe you will be surprised at the extent of how much we actually have come to know about these things in the evolution of civilization. And maybe you will be even more surprised by the fact that the people able to access this information with the most ease (i.e. people living in industrialized nations) are the ones ignoring it the most persistently and are living an everyday life to the very contrary of its message.
Anyway, the journey will be long and very exciting. Many ingredients will be needed. Starting with mathematics, fundamental mathematical models of reality (i.e. physics), complexity, notions of philosophy, the mind and many other fun things. You will encounter paradoxes and puzzles, dilemmas and dichotomies. And at the end of it all, standing on a foundation of firm knowledge, you will perhaps be able to see a very fine outline of the deepest message encoded into reality reflected in our minds, offering a possible answer to everything there ever was to ask, and maybe much more. You are reality, that says it all...
Well, at least that's what this site will hopefully slowly grow to reveal...