Absolutely!
You can upload any image or PDF file to Bramble, but if you’d like to upload other file types such as Word or Powerpoint then you simply export them to PDF and then upload them to Bramble.
Watch how to do this here:
Alternatively, if there's a specific part of a document you want to share you can use screenshot or the Snipping Tool to grab that and paste it in to the notebook.
Here's how to screenshot: