I tried to follow the steps to get started on Nostr, so when I was directed to nostrplebs to purchase the NIP-05 verification I was automatically redirected to Al by and voltage to get a node and so I did but I have no idea what it is for nor how to use it. It was surprising to me that I also received an invoice for it in dollars. 
 I’m still learning. 

 Yu don't need verification. Skip it. It is only handy to verify if a website is yours. 

 Okay, thank you 🙏 

 The best tip that I can give you is this: 

use the search bar
the private messages that only you and one other can see are encrypted for the outside world.
the relay can see what you search for and what ip (internet) address you have, so use tor or a vpn.  

 Got it, thank you.