Uploading Files in Cordova / PHONEGAP

I am starting studies in CORDOVA / PHONEGAP but I have not yet succeeded in doing UPload of Files other than photos (.doc, .pdf, .xls, etc). I ask for help in getting an explanation of how to proceed to get the file on the Device and pass it to the File-Transfer plugin. Home Initially I used an input-file but the path of the file was as C: //FAKEPATH/NOMEDOARQUIVO.PDF, but I read here in the Stack that such a resource is not supported which left me with even more doubts. Home I do not thank anyone else who can help.