What type of documentation is more convenient for Front and Back coders of CRM/CMS systems?

Question

Documentation

Colleagues such a thing .. almost intimate :)
We wrote a hybrid CMS system with block functionality + CRM ... in short, that's not the point now .. the
difficulty turned out to be where no one expected it)
1. Initiative staff and the resulting:
1.1 Documentation
What the documentation format for describing the system is the most effective in terms of immersion in a new product.
1.2 Visual reinforcement
Do you think it's worth making video streams for documentation on the front?
At the start, the option was considered not to go beyond programming languages ​​and thereby simplify the connection of new specialists .. And now the brain is boiling - how to teach))

Answer 1

For developers - documented api in the wiki or in the code itself
For end users - videos and webinars