All the following pages deal with Tango DJing. Most of them you can easily find by just asking Google. As usually I would like to disclaim all liability. You follow these links on your own risk and I do not guarantee that the information there is correct, complete or up to date.
Tango DJ (Yahoo Group) : https://groups.yahoo.com/neo/groups/TangoDJ/info
Tango DJ Discussion Group: http://www.tangodj.org/
Stephen Brown´s Page: http://www.tejastango.com/milongas_djsrole.html
Homer & Christinas Page: http://www.theorganictangoschool.org/dj_resource
Tangology 101: http://www.tangology101.com/main.cfm/title/How-to-DJ-a-Milonga/id/265
Tango Mentor: http://tangomentor.com/instantdj/
Robert Hauk: http://roberthauktango.com/articles/so-you-want-to-be-a-dj/
The El-Corte Manual (pdf download): http://www.gotango.ru/DJmanual2011.pdf
Tanda of the Week: http://tandaoftheweek.blogspot.com.au/p/tips-for-djs.html
Equalizer for Tango DJing: https://elespejero.wordpress.com/2014/12/17/eq-4-tj-getting-the-best-sound-out-of-your-tango-records/
Sound devices for Tango DJing: https://elespejero.wordpress.com/2016/06/30/sound-card-for-tango-djs/
Tango-Diavolo (modern Playlists, German): http://www.tango-diavolo.de/Musik.html