The next 3 links have information about modern square dancing:

1) What is Modern American square Dancing

2) Try Square Dancing

3) 70th National Square Dance Convention Highlights



The following links to  other organizational groups: 

 Welcome to CO-OP

 SEMCA   -  The Southeastern Massachusetts Coordinating Association Inc.

 NESRDC   -  New England Square and Round Dance Convention



The following links are a good source for helping to learn some of the square dance calls. 

The site has basic/mainstream/plus...and higher level calls.  GOOD DANCING!