Hello,
I am new in this business and thus maybe appear rather not properly.
For next year, I plan to produce tutorials, for which I wish to have 3D animated explainations of brain functionalities.
Starting probably in May, ongoing over several tutorials.
2 to 5 animations per tutorial.
10 to approximately 30 seconds per animation.
I have no idea, how this usually works and what costs I would have to face.
So please be patient with me and help to get started 
Thank you.