@jacovc86. I haven’t updated the modules for Joomla 2.5 yet. I plan to do that next week. But, you can try the Joomla 1.6+ edition on Joomla 2.5. I haven’t tested it yet, but it should work.
As for one-on-one sessions, I am not sure what you mean. But, do you have experience with PHP? Are you planning to develop Joomla extensions?