Lexis, Westlaw, and Bloomberg all have materials designed to help you better understand issues related to trial practice:
Or, you can see if there is a title that addresses your specific needs in one of the commercial databases.
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There are some organizations that draft materials regarding certain types of litigation. You can often locate these materials with crafty Google searches. Pro tip: try using the command filetype:pdf in your search. For example, searching [divorce philadelphia court filetype:pdf] provided us with a number of guidance documents, including this one, prepared by the Women's Law Project and Jenkin's Law Library.
Both Westlaw and Lexis have state-specific resources that provide:
1) Guidance regarding particular matters related to litigation.
2) Sample forms.
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