Sorry I'm new to the game, I bought a mining laser and a refinery but when I scoop the minerals that's where I'm clueless. Am I missing another part from my ship or do I just not understand the game at all? Any help would be appreciated.
Try this video including mining by Scott Manley: https://www.youtube.com/watch?v=kYNip6rBkWw The mining action begins at about the 8:00 minute mark. I hope it helps a bit!
It's the UI control keys that you use to highlight the various scooped minerals and select the ones you want to assign to refinery bins or to vent out of the hopper. The bins are inherently part of the refinery; a low-end refinery may have only one bin, which might be adding to your confusion.