Gale, part of Cengage, probably makes the best reference books that cover various industries in a single volume. This is the fastest way to learn and certainly

Gale, part of Cengage, probably makes the best reference books that cover various industries in a single volume. This is the fastest way to learn and certainly the most agile. Wish I had a better link, but you should be able to find some via your local library or elsewhere besides Amazon: https://www.amazon.com/Encyclopedia-Global-Industries-Gale/dp/1414435029 https://www.amazon.com/Encyclopedia-Global-Industries-Gale/d...