We're early. You can't just put something in there, you will need to 
A) sign up for a service like nostrplebs that supports NIP-05
B) have your own domain and implement it yourself. 
I think Nostr long term has alot of promise but it clearly is not intuitive yet from an application standpoint. 
Sorry if you weren't being sarcastic, it seemed that you were. 
To get technical, the domain needs a location like this that points to the npubs. It's how the search finds the npub. https://sovereigncraft.com/.well-known/nostr.json