9. A system comprising a CPU for assisting a reader to read a structured document efficiently, wherein said structured document is a document containing a plurality of structures, wherein each structure has a plurality of sub-structures for holding a plurality of contents and connecting to a plurality of presentation methods for a plurality categories of readers and for a plurality types of documents, said system comprising: means for identifying a particular type of documents from said plurality types of documents by extracting related information from said structured document; means for helping said reader to set up a plurality of preferences for said particular type of documents; means for determining a particular structure to be built according to said particular type of documents and said plurality of preferences; means for building said particular structure from said structured document by extracting said plurality of contents and filling each sub-structure by a corresponding content; means for determining a particular presentation method from said plurality of presentation methods according to said plurality of preferences; and means for presenting said particular structure according to said particular presentation method, whereby said system recovers organized information from said structured document and delivers said organized information to said reader according to said plurality of preferences of said reader.
9. A system comprising a CPU for assisting a reader to read a structured document efficiently, wherein said structured document is a document containing a plurality of structures, wherein each structure has a plurality of sub-structures for holding a plurality of contents and connecting to a plurality of presentation methods for a plurality categories of readers and for a plurality types of documents, said system comprising: means for identifying a particular type of documents from said plurality types of documents by extracting related information from said structured document; means for helping said reader to set up a plurality of preferences for said particular type of documents; means for determining a particular structure to be built according to said particular type of documents and said plurality of preferences; means for building said particular structure from said structured document by extracting said plurality of contents and filling each sub-structure by a corresponding content; means for determining a particular presentation method from said plurality of presentation methods according to said plurality of preferences; and means for presenting said particular structure according to said particular presentation method, whereby said system recovers organized information from said structured document and delivers said organized information to said reader according to said plurality of preferences of said reader. 13. The system in claim 9 , said system having a display device and a speaking device, said system further comprising means for sharing information, means for splitting information, means for combining information, means for building a new procedure, means for modifying an existing procedure, means for examining information horizontally and vertically, means for displaying information sequentially, means for stimulating ideas, means for organizing a plurality of ideas, and means for manipulating a plurality of organized ideas, wherein said means for determining a particular presentation method comprises means for determining said particular presentation method according to information contained in said structured document, means for determining said particular presentation method according to preferences of said reader, and means for means for determining said particular presentation method according to both said structured document and said preferences of said reader; wherein said means for presenting said structure comprise means for displaying said plurality of contents on said display device and means for describing said plurality of contents through said sneaker device; wherein said means for stimulating ideas comprise means selected from a group comprising means for creating branching and egging, means for creating Venn diagram, means for creating comparison list, means for mapping, means for displaying free association, and means for searching similar items, general items, and specific items; wherein said means for organizing said plurality of ideas comprise means for displaying said plurality of ideas sequentially, means for displaying said plurality of ideas simultaneously, means for sorting said plurality of ideas according to alphabetical letters, means for sorting said plurality of ideas according to categories; and wherein said means for manipulating said plurality of organized ideas comprises means for converting an idea to a different one, means for displaying an idea in a different format, means for providing synonyms and antonyms, means for searching for information with several conditions satisfied simultaneously.