Bluebook Tables 1-5: provide a jurisdiction-by-jurisdiction, hierarchical list of which sources to cite. Table 1: United States Jurisdictions, and Tables 3-5 are in the Bluebook. Table 2: Foreign Jurisdictions is only available online.
Remember, these are the authoritative sources for Bluebook (law school) purposes. Many of these rules are overruled by local court rules.
Rule 18.2: "The Bluebook requires the use and citation of traditional printed sources when available, unless there is a digital copy of the source that is authenticated, official, or an exact copy …". Exact copy is defined as a copy that preserves pagination "and other attributes of the printed work (such as a PDF)."
For use when citing a source not mentioned in Tables 1 - 5: