A wealth of free legal information is available on the Internet. When searching for legal opinions or law journal articles, there are two sites that I would like to recommend: Google Scholar and LexisOne.
Yes, it does seem that Google can do everything and Google Scholar, their legal research feature, is exceptional. While the case law only goes back to 1990, you will find a lot of information here. Try the Advanced Scholar Search for a more specific search. The advanced search allows you to search the title or body of an article, and to limit your search by author, publication, or date. You can also conduct a search for articles and patents limiting results by subject, and legal opinions and journals limiting results by state.
Another excellent website for searching legal opinions is LexisOne. In order to use the LexisOne website you must create an account. The free access is not as comprehensive as a paid subscription to LexisNexis but it is a good place to start. At the home page you will see six tabs near the top of the page. To search case law, select the tab that says Free Case Law. Search for case law by keyword or citation. You can narrow your search by limiting to specific state or federal cases. In addition you can name parties, judges or counsel to narrow your search. At LexisOne you will also find Daily Legal News, Top Cases and Blogs. In addition to the free service, you can purchase full service to the LexisNexis database for the day, week or month by clicking on the Legal Research Tab. The Lexis Web Tab links you to a search engine where you can search for legal information. The results from the use of this search engine are limited to sites that have been validated by LexisNexis attorney editors.