I am new to TKinter and cant seem to find any examples on how to view a document in a window. What I am trying to accomplish is that when selecting a PDF or TIF it will open the file and show the first page in a window using TKinter. Is this possible?
No, it is not possible to show a TIF or PDF in a Tkinter window. Your main options are to show plain text, and to show images (.gif with plain Tkinter, other formats if you include PIL - the python imaging library).
View a document TKinter