Hi Harlen-how I deal with this is by using the Dropbox app. I love this app. It goes on the iPad and also on your laptop. It also has a website, where you can sign in and transfer data that way.
What I do is select the PDFs from my PC and slide it into a folder within the Dropbox app. Once my iPad obtains a wifi connection, it automatically syncs into the Dropbox app and available to view on my iPad. It's great-hope that gives you an option.