Precedence does not exist formally in France. Cases do have binding authority over the parties, but not on future cases. Cases do, however, have persuasive value and lower court judges are aware of higher court decisions. Most case reports are published unofficially, by commercial publishers. Generally, English translations of French cases are not available.
Jurisdiction of French courts is divided primarily between l'ordre administratif (administrative courts), and l'ordre judicaire ("ordinary courts"). L'ordre judicaire courts handle both civil and criminal cases. For civil cases, the judiciary consists of higher courts (grande instance) and lower courts (tribunaux d'instance). Criminal cases are tried by tribunaux correctionnels ("courts of correction") and tribunaux de police ("police courts" for minor offenses). The decisions of these courts can be referred to one of the 35 courts of appeal (cours d'appel). The cour d'assizes can also try criminal cases.
The highest court for l'ordre judicaire is the cour de cassation. The cour de cassation is sometimes called the Supreme Court of France. Its cases (back to the 1960s) are searchable at Legifrance here. For l'ordre administratif, the highest court is the conseil d'Etat. Its cases (back to the 1960s) are searchable at Legifrance here. If questions arise as to the appropriate jurisdiction of the courts, they are resolved by the tribunal des conflits. In 1958, France created the Conseil Constitutionnel, which has the power to review the constitutionality of legislation. An English version of this site is here. Cases (in French) from this court back to its inception are searchable through Legifrance here.
France has a complicated court system. A useful diagram of its court structure appears on page 51 of The French Legal System, 2d ed (KJV 290 .D33x 1996).
Case reports:
The main French legal publisher, Dalloz, has published commentary, cases and legislation in a series of bulletins referred to generally as "Recueil Dalloz:"
Bulletin des arrets de la Cour de cassation, Chambres civiles (1951- ). KJV 446 .B85x. (Ten issues each year. Earlier decisions reported in Bulletin des arrets de la Cour de Cassation rendus en matiere civile, KJV 446 .B85x.)
La Gazette du palais: jurisprudence et legislation (1887- ) (bimonthly) KJV 80 .G39x.
Recueil des decisions du Conseil d'Etat statuant au contentieux et du Tribunal des Conflits et des jugements des tribunaux administratifs (1821- ; bimonthly 1955- ) KJV 90 .R43x.
See also the small collection of translated cases at The University of Texas's Institute for Transnational Law. For France, the decisions are from the Conseil Constitutionnel, the Conseil d'Etat and the Cour de Cassation.