A youtube course will not be as helpful as really talking in front of people. At the end of speaking.io there is a great video on public speaking. Additionally, you can try courses on Udemy (there are a lot). Source: over 2 years ago

Ps - in addition to Seth Godin's advice, I got a lot of value out of this: https://speaking.io/. Source: about 3 years ago

This is called open startup.. you can see a list at https://openstartup.tm. - Source: Hacker News / 10 months ago

I don't know about _fully open_, but I think Buffer is an example of a company that shares unusually much. https://buffer.com/resources/revenue-dashboard/ There's some sort of list at https://openstartup.tm/ but I think a lot of companies listed there are open with only select pieces of info. Both of these are about public sharing though. Employee sharing is trickier to know from the outside. Perhaps Valve... - Source: Hacker News / almost 2 years ago

- https://openstartup.tm/ pros: if you're an early adopter, it's nice to know how the service you're investing time in is doing financially. One of the biggest risks of choosing a new/unknown service, as a consumer, is that it will fail/close and you'll have to migrate somewhere else. I think the open company movement has other benefits as well. Behind just financials, but companies sharing their employee... - Source: Hacker News / about 2 years ago