Here's a helpful table for cooking beans and other legumes.
Slow Cooker Tuscan Turkey and Beans (recipe on left)
Place beans in a large saucepan; add enough water to cover, and soak if needed using one of these methods:
Quick-Soak Method: Place dried legumes in a large saucepan; add enough water to cover. Heat to boiling; boil 2 minutes. Remove from heat, cover and let stand for at least 1 hour. Drain then cook in fresh, cold water.
Long-Soak Method: Place dried legumes in a large saucepan or bowl; add enough cold water to cover. Let stand 8 to 24 hours. Drain then cook in fresh, cold water.
Drain and add fresh water to cover. Bring to a boil; reduce heat to low; then cover and simmer, stirring occasionally, for the amount of time specified below.