The Canadian legal system uses both legislation created by Parliament and the provincial legislatures and cases decided by judges as important sources of law. Formal decisions of judges are published in printed law reports. These decisions will often provide an interpretation and application of the legislation. Note that not every decision is reported and formally published.
Court decisions can be found both online and in print format, called law reports. Published law reports may be organized by geography (e.g. Alberta Reports, Western Weekly Reports) or by subject matter (e.g. Motor Vehicle Reports, Canadian Criminal Cases). The Supreme Court of Canada has its very own reports series, the Supreme Court Reports.
Law reports are mainly held by law libraries. Sometimes larger public libraries hold some law reports, but this is uncommon. For most provinces, decisions from about the late-1990s onwards are available online for free.