Mix .. the easiest way to access files on a tablet is to use a cloud storage account like Box, Dropbox, Google Cloud, OneDrive .. there are many others.
Take Dropbox for an example. Get a free Dropbox account with 2Gb of storage here ...
Dropbox Basic (Free account) - (https://www.dropbox.com/basic)
Then download the Dropbox app on your tablet (search for Dropbox in the app store) . Get someone to help you download the Dropbox app on your PC from their website too .. it works and looks like a file folder to Windows.
Now, any file you copy to the Dropbox folder on your PC magically appears in the Dropbox app on your tablet. It even has built in file viewers for many filetypes, so it can show a PDF file or a Word document or an eXcel spreadsheet or even play a mp3 file.
oh and pictures too .. if you ever get some that make sense to show ...