There are a few folks out there that insist that, in order to be great, you need to be able to take perfect pictures and not have to do anything to them to make them better right out of the camera. More power to them. I see them as coming from two groups. One works very hard to make a shot look like reality with great lighting, and the other who are just to lazy to learn post processing. Frankly, I'm not much of a fan of reality. I'm an artist. And I can't think of any camera that takes pictures the way I want them to be when I'm finished. And even if you are a wedding, or senior photographer, you'd better clean up that shot. People want to see themselves as they think they look, not with that pimple that emerged on their noggin that morning.
Back to the point. Learning by doing and feeling and not by keystroke and menu by menu memorization is the best way, in my opinion, of learning software. Learn what it CAN do and not how to do it. Anyone can figure out how. It's knowing it can that is what you need to remember.
So, learning Lightroom or Photoshop, or any of the computer tools should be a matter of learning what it can do, not exactly HOW to do it. Think about it, if you didn't know what it can do the how isn't important.
The other very important reason to learn all you can in all aspects of photography is that your personal style will develop from those skills. When people can recognize your pictures from others you will then have a marketable product.
If you take one of my classes expect to walk away with, 'Wow, I know what I want to go practice and develop!' I won't let you take a bunch of step by step notes because you'll leave not knowing what you can really do. Makes little sense.
Of course, I give classes. I highly recomend the one-on-one classes. Learn more in the 'Learning Photography' part of this site.