I'd like to share a point of view. I find, embedded in buddhism, two kinds of approach. The psychological & the cosmological one.
If you start with Suffering, you can either see it as "existential suffering" (psychological approach) or the cycle of rebirths (cosmological).
As for craving, you can understand it as the origin of suffering due to tension and frustration (psych.) or you can see it as the origin of this body, this mind, and even this world (cosmo.).
Nibbâna, you can see as a state of mind (psych.) or as a dimension of reality (cosmo.).
The jhanas, you can see as levels of consciousness (psych) or as access to other planes of reality (cosmo.).
The various realms, you can see in the same way.
The "world" you can see as the mind, or as the universe.
Saying that nibbana is the end of the world can be: you stop to "reify" a world (psych.), or you stop the production of the world (cosmo.).
Dependent origination can be a psychological law (psych.) or a law of the origination of the world (developping the 5 aggregates). It can be read as applying to only this life, or to 3 lives.
Mara is both the inner temptation (psych.) and an evil being (cosmo).
Kamma can mean conditionning (pysch.) or a law of the universe which shapes the phenomena (cosmo.).