Here are the basic directions, although the website gives a lot of good color:

Stovetop Basics (Step-by-Step)

• Check the beans for debris, and rinse in several changes of water.
• Saute aromatic vegetables in olive oil.
• Add the dried beans and enough liquid to cover by about 2 inches.
• Bring the pot to a rapid boil for 10 to 15 minutes.
• Lower the heat to a gentle simmer until the beans are done, between 1 hour and 3 hours. If the bean-cooking water starts to get low, add hot water.
• Salt when the beans are just starting to turn soft.

from: https://www.ranchogordo.com/blogs/recipes/cooking-basic-beans-in-the-rancho-gordo-manner