I mentioned two ways to cook a pork shoulder. Here you have the oven version. The crock pot version is just as simple, just cut off all the skin. If left on it will be super chewy and not at all appetizing. Next use the same rub but just add it to the pot, you may want to increase the amount and add a bay leaf. Also still you can still poke holes into the meat and put garlic in them. Or rough chop the garlic and add it like the spices. Also you will need water to keep it from drying out. Adding a little orange citrus is nice, but not necessary.
* You should treat this like you would a regular roast*