An excellent overview from LexisNexis:
How to Write a Case Brief for Law School: Excerpt reproduced from Introduction to the Study of Law: Cases and Materials, Third Edition (LexisNexis 2009) by Michael Makdisi & John Makdisi.
To search for a case, the citation is:
376 U.S. 254 is a U.S. Supreme Court case. It is printed in volume 376 of the United States Reports. Page 254 in the book is the first page of the case. The entire case is printed on pages 254 through 276.
All the above citations are for the same case, but printed in different books by different publishers!