Lobster Tacos with Mango Salsa (Tacos de Langosta Con Salsa de Mango)

For the lobster

• One 2 to 2 1⁄2-pound lobster

For the mango salsa

• 1 cup diced mango
• 1⁄2 cup chopped red onion
• 1⁄4 cup chopped cilantro
• 1⁄2 chopped fresh habañero chile
• 2 Tbs. lime juice
• 1⁄4 tsp. salt

For the tacos

• 4 6-inch flour or corn tortillas