You will not need to know any techy stuff to install it, your clients will have no problems with using it.
Support for this externsion is Excellent. Ross replyed to my email straight away. Issue was not on blog by my server but he updated my blog to latest version advice what to ask my Host provider to solve the issue... I mean seriously - I could not expect any more!
I really recommend it to everyone who wants to run blog on his Joomla website!
Many Thanks to the creator.