Freelance Technical Trainers

We are a fast growing immersive space technology company based in the UK with a number of offices in the US. We have a growing number of high profile clients that require additional technical training and documentation. It would make sense to hire a freelance team to be trained in Igloo technology and then pay for the services provided to ensure our clients get the best possible use out of the technology. Any advice as to where to get started here? Thanks for reading!