How to avoid Tattling

Hurting someone physically, Mentally, Verbally is a sin according to Buddhism. As I believe no matter we love or hate each other, anyhow we don't have any ownership of any others lives. 1. So how about **Gossiping** or the **tattling** about others lives ? 2. How does Buddhism explain ***specifically*** about TATTLING ?? 3. How one should practice not to Gossip about others lives ? 4. In the other way how one should practice to face others Gossiping about himself/herself ?