When citing to anything that is state specific, be sure to check the "Tables" part of the Bluebook for the specific state that you are citing to. Some states may require parallel citations or have other various regulations to be aware of.
If the information you are citing is in a pocket part/supplement then cite the addition of the pocket part/supplement and NOT the main volume. BUT if you want to cite to both the main volume and the pocket part/supplement then you must cite to both (i.e. if you are citing something that the supplement simply added or changed from the main volume). See rule 3.1(c).
A pinpoint cite is a citation form used when you are not just citing to a case in general terms. You should use pinpoint cites when the proposition that you are advocating for comes from a particular page or sentence of an opinion. Here are some examples:
Boeing v. Airbus, 276 P.3d 56, 58-60 (Wash. Ct. App. 2004).
Tatiana v. Sousa, 489 U.S. 61, 68 (2004).