Is there any one may help me with the understanding of Hilfsverben haben sein werden?

I just don’t understand the difference among indikativ and konjunktive I
This, in the Preteritum, Perfect, Plusquamperrfekt and Furtur-I and II.
Bitte… is there any one that may sacrifice 10 minutes?

Well, hope some one may have a time for this and please, if you want to know more about the Spanish language, don’t hesitate to ask me.
Jorge