Hello there, welcome to Nostr it's great to be here! As a newcomer you should know a few things. Relays are websites which make up the social network so when you post to multiple relays your reaching out to more people. There's paid relays & free ones paid ones charge you when you write a post to them. Ip is exposed dms are not private dm-reporter will timestamp them on it's profile for public knowledge. Now you may want to add a wallet to your profile so you can start zapping & getting sats. If you're on Amethyst go to your profile from the picture icon in the top left corner then hit the edit profile button which looks like a pen with 3 lines you will want to go to where it says LN address & add your wallet's email there or the url in lnurl (outdated) if you don't have one I recommend

Wallet of Satoshi — The World

Lightning‑fast Bitcoin payments with a focus on simplicity.

or

Alby — Bitcoin Lightning Wallets & Tools

Alby offers open-source wallets and tools for using Bitcoin as everyday money online, in apps, and in person. Try Alby Cloud or self-host Alby Hub.

You sign up when your on the dashboard hit receive & copy the email or lnurl then paste there & save. If you need help or have any questions ask me.