Hello Jordi ,
You can find information for Geogebra from Scientix moodle. You needs to have access. Ack Premysl Velek for password. I also can't enter and needs to access. Look here:
http://moodle.scientix.eu/course/category.php?id=12
This is link for geogebra's resources from Scientix portal:
http://www.scientix.eu/web/guest/resources
You will needs to put filter for different subjects.
I made presentation for beginners how to use Scientix portal:
https://europeanschoolnet.basecamphq.com/projects/11700051-scientix-2-teachers/posts/82201388/comments#263947553
I can translate it in English, but still wait for Agueda's comments.
Kind regards,
Tsetsa