Grammar and Usage

Acronym Finder  -  "Acronym Finder: the web's largest searchable dictionary of acronyms and abbreviations -- over 335,000 definitions in the database! Covers: common acronyms, computers, science, technology, government, telecommunications, & military acronyms."

Elements of Style  -  By William Strunk, Jr. "Asserting that one must first know the rules to break them, this classic reference book is a must-have for any student and conscientious writer. Intended for use in which the practice of composition is combined with the study of literature, it gives in brief space the principal requirements of plain English style and concentrates attention on the rules of usage and principles of composition most commonly violated."