I danced at Aimee's Academy of dance for 14 years. I tired all types of dance, but only did Jazz and Lyrical. I assisted and taught all other genres.
http://aimeesacademy.com
Technique
Bar
Positions
Ballet
Nota:
There are many feet positions in ballet which are expressed as numbers such as 1st, 2nd, 4th, and 5th. Attached are images which represent each position.
http://www.pbt.org/community-engagement/basic-ballet-positions
Arms
Nota:
Your arm positions in dance are one of the two most important positions. Most of the time if your arms are not strong then they look like noodles.