Method and system for visual cues to facilitate navigation through an ordered set of documents

Systems and methods for organizing a repository of unstructured documents into groups of ordered reading lists, i.e., document trails, comprising an ordered list of documents that relate to each by subject matter. Text analytics and natural language processing steps group documents, chose the most important/relevant documents from each group, and organize the documents into a suggested reading order. Document fragments are also analyzed by such analytic and processing steps to identify preselected fragment characteristic aspects. Documents within each document trail may be marked up or highlighted to indicate which paragraphs therein contain such aspects as novel or useful information, or information that is not useful or redundant.