Legal Encyclopedias are an excellent way to start your research into Georgia Criminal Law, since they focus on providing an accessible overview of the law. Georgia Jurisprudence (Westlaw) focuses its coverage of Criminal Law in volumes 18-20, but you should still look for additional coverage via the 'Criminal Law' index entry.
National Legal Encyclopedias focus on providing an accessible overview of the law. This means that they can often be a good way to start your research into Federal Criminal Law, although you need to be careful, since they also include coverage of all 50 states.
For recommendations, see Getting Started. This is a more complete lists of the library's treatises on this area of law. In addition, you can often find coverage of Criminal Law-related issues in litigation-oriented practice treatises covering other substantive topics.
The scholarly commentary found in law review articles makes them an essential source for scholarly or academic legal projects. They can also be of use in more practically-oriented research, especially. If you can find an article that closely matches your issue. You can use these links to search HeinOnline and Westlaw for relevant law review articles.
If you are researching Georgia's Criminal Law, you may find the Criminal Law article in Mercer Law Review's Annual Survey of Georgia Law useful:
American Law Reports are an excellent resource for researching narrow issues that arise under Criminal Law, especially at the federal level. You can search the ALR database or its index in Westlaw with the following links:
This list of Criminal Law-related ALRs should give you a sense of what's out there, but it's by no means complete: