I don't have any links, but there are companies around the world that sell training videos about power plants and turbines. You could do an Internet search and look for them.
I've even seen some for sale once on eBay (isn't it amazing what you can find on eBay??!!?).
Lastly, I'm have been absolutely amazed at what is available on YouTube. I take most of if with a grain of salt (in other words, I don't believe everything 100% but just use it to "season" my experience or feelings). There are even videotaped university lecture courses available on YouTube.
But, we don't know what kind of information you're looking for. Basic generic information; operations training; maintenance training; troubleshooting; combustion systems; etc. What kind of information are you expecting to find, specifically?
You'll generally find that when posting to control.com (or any other forum) that the more information you can provide in your original post the responses will be better and more concise. The likely reason you haven't had a response yet is because we just don't know what you mean by 'gas turbine function'.