Hi. There's a few ways to share files from your PC to your Android tablet. It depends on what you'd like to do:
- You can connect them to the same network (like your home wifi connection), then use a file explorer app on the tablet to connect over the network to a shared folder. This is probably more trouble than it's worth.
- You can use a service like Dropbox or Microsoft SkyDrive to sync files to online storage space (2 GB or 7 GB for those two services), then use their respective Android apps to access the files from anywhere.