You need to create a profile on Linkedin and be active, post and comment on others profiles. It's a process but people help people they know. Executives are extremely busy people and they protect their time. Also try Facebook groups, again you'll have to join and interact- that's networking in social media. All the best.

Most universities have online courses these days. Some are even free. Also there are online course providers that host courses for people. Most of those are by experts in their field. Try places like, Udemy, Skillshare, Coursera, etc. All the best.

I know South Africa has a critical skills list on our department of home affairs website for people who want to come here. Maybe Holland has the same and he can apply for a work visa and then explore his options once there?