101

[Mark A. Mandel]

It's been common for what, over a decade? But it's not in OED or M-W
Online: "101" after the name of a topic, meaning 'the basic information
about..., introduction to...', as in many colleges' course catalogs.

 http://www.jewfaq.org/
 Welcome to Judaism 101! Judaism 101 is an online encyclopedia of
Judaism,

 http://www.asp101.com/
 The place ASP developers GO!

 http://www.internet101.org/
 to learn about the Internet and how it works

 http://www.islam101.com/
 Islam 101 is an educational site on Islam, its way of life,
civilization and culture

 Mortgage101.com Answers to Your Mortgage Questions

 Toiletology 101: Free Toilet Repair Course

 CGI Programming 101 - Learn CGI Today!

 Musicals101.com - The Cyber Encyclopedia of Musicals

Not surprisingly, Google has a lot of hits from computer-related sites
and sites with '101' in their names. The above are from the first 20 of
"about 18,700,000" hits.

I hardly expect this usage to be news to any reader of this list, but I
was surprised not to find it in dictionaries.

-- Mark A. Mandel
   Linguistic Data Consortium, University of Pennsylvania