If you just need to move a file over, a USB stick will do the job. Raspbian can read all of the common Windows filesystems.
That's the simplest method to get the file to your Pi, but if you're going to be moving files back and forth frequently you'll probably want to look into using some kind of network based file sharing.
Once the file is there, what you can or cannot do with it is another story. An .imgc file looks to be a raw disk image format, probably a hard drive. This is not the most convenient way to store your files, especially if you need to work on them. You should really narrow it down to the files you need as opposed to the entire drive, and put those into folders that you can transfer over to the home folder on your Pi.
It's probably possible to make the Pi work with that image file, but it's going to take you far more time and effort. Your actual files are buried inside several unnecessary layers of stuff.