Here are the basic tango terms you need to know

Milonga - a social tango event. 
  
Tanda - a set of three or four songs. A tanda must have a certain style. You normally dance a tanda with the same partner.

Twelve minutes is the duration of the average tanda.

Cortina - a break or ‘curtain’ in between tandas.

Porteño - all things that originate in Buenos Aires, including the people.

Tanguidad - a sensibility, a state of mind that tinges everything with nostalgia. You can have tanguidad without knowing anything about tango

Tanguero/ tanguera - people who live and breathe tango.

Tangoholic/ tango addict - someone who can't stop dancing (note for Tangoholics: Twelve Minutes of Love is a human story, not a dance manual or a milonga guidebook. The mechanics of the dance and the milonga circuit have been simplified, in order not to bore normal people to death.)

Tangasm - yes please!