OSCampus Nulled is the best way to build an online training site with Joomla.
OSCampus allows you to publish online classes. You can use OSCampus to create classes with multiple lessons and quizzes. The lessons can consist of anything from videos or text, to presentations and PDFs. Your lessons can be YouTube or Vimeo Videos, Slideshare or Google presentations, simple text or complex code.
Do you want to test and rewards your users? When users finish your classes, you can let them take a quiz, and earn certificates when they pass.
If you want a Joomla LMS, then OSCampus is absolutely your best choice!