This link below provides a good dimension of the badminton court.

http://www.sportsknowhow.com/badminton/dimensions/badminton-court-dimensions.html%23enlarge

 

The two links below provided the old and current Badminton rules.

http://www.bwfbadminton.org/page.aspx?id=14914

 

 

Attached below are some of the useful badminton techniques to follow on YouTube.