Images: You'll need your profile picture and banner. Some clients allow you to upload these directly in the client. Others require you to upload elsewhere and copy the link. You can upload images to https://void.cat, https://nostr.build, and other locations.

NIP-05: This is an identifier, like an email address, that gives you a human readable format for your public key. It also makes you to to be easily searchable and found across Nostr. You can register an ID at https://nostrplebs.com but many other providers do exist. You can also set one up yourself with your own domain.

Lightning: Enter your LNURL reusable invoice address or LN Address here. This also looks like an email address. i.e. devouthaircut88@walletofsatoshi.com You can also get one from https://stacker.news, https://strike.army, and many other providers. This allows you to send and receive Lightning tips or Zaps.

Relays: You should have a combination of paid and free relays to be able to interact with the most amount of people. Here are a few.

Paid: wss://eden.nostr.land, wss://relay.orangepill.dev

Free: wss://nos.lol, wss://relay.snort.social

Many other relays exist, you can discover more later.

Find people to follow:

https://snort.social/new - This Nostr client comes with a list of Nostr power users to keep your feed always busy and allows you to search for and easily follow all of your Twitter friends.

https://bitcoinnostr.com - This website consists of Nostr Users that are Bitcoiners. You’ll recognize them from Bitcoin Twitter.

https://nostr.directory - This website contains a vast directory of Twitter, Mastodon, and Telegram users that have connected their Nostr public keys.

https://nostrplebs.com/directory - On this website directory you’ll find familiar faces from Bitcoin Twitter and plenty new faces from Nostr.