Docker tutorial is here. This is a good place to start.
We use Kibana to visualize data.Here's a tutorial.
The VAST 2.0 specification is here: 2.0 Spec
The VAST 3.0 specification is here: 3.0 Spec
The VAST 4.0 specification is here: 4.0 Spec
Source code is here.
The javadoc for RTB4FREE is here
A highlevel slide show of RTB4FREE is here.
Videojs is the video player we use (with the vast plugin) to demonstrate video ads. You can find it here.
The VAST plugin for Videojs is located here.
Validator is here.
A video. that explains how ads are served in RTB.
The specification is here.
Find a handy IAB categories list in JSON form here.