Texas Local & District Courts
Texas district courts are primarily trial courts, and most of their decisions are not published. Some larger counties offer access to their court dockets online; this access may or may not include copies of actual documents. See here for a list of links to districts and counties that have such systems. Bloomberg Law also offers access to trial court dockets from all Texas cities and counties (subscription required). Most of the dockets on Bloomberg provide access to related court documents.
If the document you need isn't online, the most reliable way to obtain it is to request a copy from the clerk of the court that heard the case. See here for an interactive map of district and county courts.
Federal Courts and Texas Appellate Courts, Texas Supreme Court and Texas Court of Criminal Appeals
What is a case citation? How do I locate a case from a citation?
The citation to a case includes the reporter volume number, the reporter name and series, and the page number where the case begins. For example:
123 S.W.2d 454
123 = the volume number of the reporter
S.W.2d = the name and series of the reporter
454 = the page number the case starts on
So this citation is found in volume 123 of the Southwestern Reporter, 2d Series, beginning on page 454. Major state case reporters and their abbreviations are listed at the end of this guide.
You can also use citations to look up a case in Westlaw, Lexis Advance, or a free online legal research site. Most of them will allow you to search by citation, so even if you don't have access to the print reporters, a citation can still get you to the right case quickly.