It’s an English proficiency test just like Toefl or IELTs. The difference is u can only take it online at ur home or wherever there is internet access...andd it costs only $50 while Toefl/ielts cost $200-$250......u don’t register for the exam instead u buy it and once u buy it, u can take the test whenever u want in the first 2 months...it’s graded on a scale of 0-160... and u can find practice exams on youtube nd their website