I can give you a general answer that should make you understand.
Sikhism is ALL about NOW, this moment whilst you are livinig. The object is to live the sikh way of life and become gurmukh. It is NOT a preparation for death so that heaven or hell can be decided.
However the ONE lord conducts everything and his sequence of events in creation are ALL upto him ! -to put it smply.
We shouldn't be concerned about what his system is for conductng the whole universe, if he wanted us to know then we would have known. What we DO know, is that we have this life and it is here and know that we should be concerned about.
How he does what he does is ALL his will or Hukam that dictates everything, we are under his command, so we let it be!!.
This should explain the reincarnation, new souls, hell and heaven...etc.. We don't need to be worrying about how he conducts HIS HUKAM, do we ?Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/questions-and-answers/38733-can-i-sure-god-wants-sikh.html
I have given you a very brief and logical answer, some members may be able to answer in more detail.
He is the creator and we, and all around us is the creation. He is within all that is created, so he is everywhere, he doesn't sit on a throne in heaven!! Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=38733
We should connect with this creator in creation, we were created from him by him and in the end or for eternity we can merge back, so to say, as ONE again.
There is ONE and all is ONE.