Looking through the forums, I am impressed by the impact that B&W images can have, so I was inspired to try working on a few of my own (colour to B&W, that is). I'm not really impressed by the results so far, and I'm sure that some of it is down to technique (I'm using LR4.1). However, I suspect that a lot is down to the fact that I don't actually know what makes a good B&W image.
I can look at images that impress me, and try to work it out - but that isn't easy either.
To get me on the way, can any kind soul offer advice, or point me to a relevant thread or other resource that could help me on the way.