Nostr is a decentralized social network gaining popularity due to its commitment to freedom of expression and data security. This open protocol provides a platform where users can interact without the constraints of censorship or excessive surveillance. However, for novices, the apparent complexity of its use can be a hurdle. Faced with this challenge, a clear understanding of its operation and practical advice is necessary to fully reap the benefits of this platform. This article will guide you through the basics of Nostr, from initial setup to posting and interaction, while addressing security and common troubleshooting.