There are many good introductions to EU law.
For an introduction to the institutional structure of the EU, see:
For an encyclopedic treatment of EU law, see:
For general monographic commentary on the EU, see:
J. Fairhurst, Law of the Euroopean Union, 5th ed., (Harlow: Pearson Longman, 2006) (KJE947 .V56)
Administrative Law
Company Law
Competition Law
Criminal Law
Environmental Law
There are also a few specialized treatises available in Lexis.com and WestlawNext.
Many articles on European Union legal topics appear in American legal periodicals, which are indexed by LegalTrac (1980 -) and by the Index to Legal Periodicals (1981 -). These indexes also cover a large number of non-U.S. journals.
The Legal Journals Index (1986 -) indexes British journals, which also include many articles on EU law. LJI is available in WestlawNext.
Many U.S. journals are available in full text in West;awNext and Lexis Advance (and Lexis.com). The HeinOnline Law Journal Library is both an index and a database, which includes the full text of many U.S. and non-U.S. law reviews from volume one onward.
A number of specialized periodicals deal exclusively or primarily with EU law.