I did not get any training from anyone. I did buy the video from monolithic dome on how to build a dome. And are working on a new way of building a dome. That is why I did a small scale dome test first. I will be using a 40 foot dome air form. There will be two layers for water proofing the first is latex cement additive in the structural layer, the second is a water poof stucco over the aircrete.