I am going through the first tutorial video and have downloaded the sample files suggested to make a brochure. When trying to open those files in the application I'm getting an error message saying InDesign may not support the file format, a plug-in that supports the file format may be missing. Have now spent an hour trying to troubleshoot and ready to give up. Hope someone can help me fast. Thank you.
I'm sorry you had trouble with this. If you're following along with the videos in the tutorial, you'll first construct the brochure from scratch, and then place the sample files that are provided. Watch the second video in the How to design a brochure with InDesign tutorial--at ~0:14 -- you'll see how the instructor places the sample files in the document.
Hope this helps.