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 public dm-reporter will timestamp them on it's profile for public knowledge. You need to add a wallet before you can receive sats check out wallet of satoshi or alby to add to your profile.

If you need help or have any questions ask me.