Best skills to learn for process automation?

Process automation is broad for sure! I kept the question broad to get a wide range of answers though I’m focused on documentation and business processes.

Automation is a broad subject. I'm getting a lot of mileage out of AWS Lambda for automating infrastructure related tasks in AWS accounts.

Start with these: Python with Selenium or Playwright. Also: UiPath or Automation Anywhere

Perhaps you could elaborate more on what you have to do?