Westlaw provides many subject-specific resources. On Westlaw, in order to access specific materials geared toward criminal law practitioners or resources, try one of the following:
Click on the "Practice Areas" link on the main page and then choose "Criminal Law" for easy access to relevant treatises, journals, forms, briefs, etc.;
Choose a category under the "Content types" link on the main page, such as secondary sources. Scroll down to choose materials by topic; OR
Choose your state jurisdiction under "State Materials" tab and browse secondary sources, etc.
Like Westlaw, Lexis provides many subject-specific resources. In order to access specific materials geared toward criminal law practitioners or resources, try one of the following:
Click on the Practice Area or Industry tab on the main page. Choose Criminal Law & Procedure. Notice that Lexis also has a practice area for Evidence; OR
Run a search from main search bar using the filters (jurisdiction, category, and practice area Criminal Law & Procedure and/or Evidence)