Ok, I think I understand now. Here's what I'd suggest as a good way to get to know the capabilities of your lenses.

Use the 50mm for a few days. Don't take it off your camera. Take a variety of pictures of subjects close in, mid-range, and 'far'. See what it does with a flower at 1 foot, f/1.8, and your house from across the street at f/22. In other words, take it for a real test drive. Don't worry so much about 'art' or composition or the silly 'rule of thirds' at this point.
Then take the 18-55, and stick it at 18. Do the same as you did with the 50 - close, far, wide, narrow, etc etc.

he's got it.you know you have one good lens,now you may find out you have two.i'll bet your kit lens is more like f3.5 not f 1.8.most likly f 3.5 will handle any situation you face.
































Then set it at 35, and do the same again. Take a flower up close, a portrait, and maybe a landscape type shot. Take the flower at f/2.8 and at f/11 and at f/16, and so on.

Do you see what you're doing? You're learning what the camera/lens 'sees' at various focal lengths and apertures. You're not worried about the art of the photo at this point, you're discovering what the given lens settings produce. The idea here is to be able to look at a scene in a few weeks or so, and think, 'OK, my subject here would be best served at XXmm, f/N.N, at about 1/250th or so, because I know what this amount of light, and this kind of subject will look like under those conditions, since I took what Jim suggested and paid attention to what happened.".

The 18-55IS lens is a perfectly good lens with which to learn about light and shadow and all that stuff. But you have to THINK about what you're doing.