GM #Nostr and #coffeechain 👊

While I have my Americano here, I need to #asknostr a question. I want to use my domain and cheap VPS to point at my self-hosted nostr:npub155m2k8ml8sqn8w4dhh689vdv0t2twa8dgvkpnzfggxf4wfughjsq2cdcvg on nostr:npub126ntw5mnermmj0znhjhgdk8lh2af72sm8qfzq48umdlnhaj9kuns3le9ll and I need a tutorial or something suitable for a child's mind. I want to get a good bottom-up understanding of each component and its job. Anyone know of a guide or guides that can baby-step me through this? 

https://i.nostr.build/Vl9A.jpg