We published two tutorials on youtube. One movie explains how to install MediaWiki the other one show a step by step installation of BlueSpice.
We’re sorry that the explanations are in German. But at least it’s a start of getting an idea on where to click and what to do.
Good luck and if you need any further information….
… have a look at our helpdesk (with installation manual, extension descriptions, changelog …)
… please ask in our support forum on sourceforge