Help with German certificate for arborists

I am considering to go through some arborist courses in Germany, but I have a few questions about medical examinations, first aid certificate, equipment, etc.
Does anyone have any experience with that? German tree worker around here, probably?
I'd really appreciate some help...

Nathan can help you, I'm sure.

Well, let's hope, that the thread will draw his attention.
I don't want to be insolent, but maybe it'll be better to try with PM too...

I already did that, brother! He'll be piping up soon...

Thanks! The beer is on me!

Sorry about spacing out here!

I did it a while back so my info may be out dated. The SKT-A&B are needed plus a medical and 16hr erste hilfe. The first aid is easy to find just make sure it is the correct one - 8hr vs 16hr course.

Johannes Bilharz at Freeworker is very helpful (I got my SKT A&B from them) and there should be some decent online resources with the gartenbau berufsgenossenschaft, http://www.svlfg.de/ They are who I got my liability insurance from.

I left Germany at the end of 2006 so I may be out dated on my info.

Thank you
I'm going to try taking SKT-A or B this summer (if there isn't any requirement for time gap between the two levels). As soon as I have any results I will write here again. It's nice to know how exactly the things work out there!