Hai, Check below link for CWA information in brief. For detailed information refer icwai.org
For study material of ICWA, you can download relevant subjects of Inter course from below link, till you gets registered for the course. You can directly appear for CWA Inter course. You have to choose whether you opt for postal/oral coaching. If you choose postal coaching you need to write CC papers and should be sent to CWA chapter. Then based on the Coaching Clearing Certificate, you will be eligible for Inter exams and should also do Computer Training at the Chapter office. You need to register before December 18 in order to appear for June 2012 exams. In case if you choose oral coaching at the chapter, then no need to write CC papers and its submission.
https://students.icwai.org/studies/studies/default.aspx
https://students.icwai.org/studies/students-std-download.asp