Hi again,
What did you get a free trial of? If it's Acrobat, you would open the PDF and choose File > Save As Other > Microsoft Word > Word Document.
If you got an ExportPDF subscription (which isn't free), you would log in to cloud.acrobat.com/exportpdf with your Adobe ID and password, and then follow the prompts to convert file. Here's the ExportPDF getting started guide, with a little more information: Getting Started with ExportPDF
Please let us know if you have additional questions.
Best,
Sara