I am new to Flow and having a hard time with the lack of specific documentation for different actions. For instance, I am looking at actions such as "Get File Content" or "List Files in Folder" in OneDrive for Business, but I have no idea what these actually do. The documentation I find says things like "Get File Content: This operation gets the content of a file." But how do I know if that is what wil help me in my flow? What do I then do with that action? I am looking for more detailed information that will really help me create the flows I need, which are more complex than the standard " Get Approval", etc type of flows for which there are examples. Is there more detailed documentation anywhere?