This course starts with basics of crude oil origin and production, explains refining processes to meet gasoline and diesel specifications. Effect of crude oil properties on refining processes and operation will be presented. A virtual tour of a refinery will be provided with hundreds of photographs and videos. Basic information on refinery organization and rule of thumbs about refinery economics will be provided. This course is designed for people dealing with refineries and seeking a detailed overview of a refinery, from crude oil properties, product requirements, refining processes, organization and economics. Each attendee will get a booklet of more than 200 slides on topics listed below along with glossary of refining terms, naming conventions, abbreviations and Jargon.