Grilled Pork Adobo

What is the best cut of pork to use for adobo?

What type of vinegar should I use?

How long should I marinate the pork?

How do I know when the pork adobo is done?

Can I add other ingredients to my adobo?

Is it necessary to brown the pork before simmering?

What should I serve with the pork adobo?

If I don't have soy sauce, what can I use as a substitute?

Can I use another kind of meat for adobo?