Problem scenario
You have a letter 8.5 X 11 PDF. When it is opened the longest way is the width (the horizontal distance) and the shortest dimension of the PDF is the height (the vertical distance). You want it to be oriented in a more "normal" way so it shows as a portrait not as a landscape. You have a non-commercial need, and you do not want to spend any money. What should you do for a free solution?
Solution
Use PDFMate by going here: https://pdfmate.com/