I am new to iTunes. How do I transfer files of Powerpoint slides into iTunes from PC and then into my iPad for use at a meeting

I am new to iTunes and the iOS in general, having just migrated from Android devices. Please advise as to how I can easily transfer files of Powerpoint slides in documents on my PC into iTunes, so that I can use Adobe or other app to get them into my iPAD to be able to use them at a conference. Thank you.