recently we purchase the cloud service from Adobe and I need to know how should we use the CS6 in cloud Service for our students in my college ?
There is more information about Creative Cloud for students and teachers here: http://www.adobe.com/products/creativecloud/students.edu.html
If you are looking to use Creative Cloud throughout an educational institution, you would probably want to look into an Adobe Education Enterprise Agreement. Find out more about this here (PDF): http://wwwimages.adobe.com/content/dam/Adobe/en/volume-licensing/pdfs/eea-faq-en.pdf
If you/your school are not already in touch with an educational reseller, you can find one here: http://partners.adobe.com/resellerfinder/na/education.jsp