@Tod ********
Thank you for your answer. Yes i ear a lot about volunteers visa but I thought that with this type of visa you could / should still volunteer (which doesn't bother me).
If there are another solution, not with "alternate" means, I would prefer. But if there is no choice, why not. I'm especially afraid of getting ripped off or giving my passport to anyone. I have no contact for this type of "alternative" visa. Thanks for theses explenation and for your time :)