Manolis, why don't you try these Online tests offered by HAU upon registering?
After you have finished that, you can explore all sorts of ECCE links on my blog:
http://markaki-students.blogspot.com/2010/05/useful-ecce-links.html
After you have finished that, you can explore all sorts of ECCE links on my blog:
http://markaki-students.blogspot.com/2010/05/useful-ecce-links.html