Nikon D3000 features

So my mom recently bought me the Nikon d300. Now I love photography but this is my first real "big time" camera since I'm 15 and irresponsible. I have a 18-55mm lens and a 55-200mm as well. I was trying to take a picture of rain drops on a window but when I use both lens (on all modes) it just focuses and skips right past the drops and onto the big picture like the tree behind it and stuff. Or another thing if I get real close, it just looks like bubble wrap or something. How do I get it to focus on the raindrops. Like is there certain settings to put it on and stuff? I'm a complete novice at this stuff.

Added (1). DEAD - I'm right up close to the window. Like about 1 foot or something And how would I put it on that manually focus?

I'm thinking of two things:

First: How close are you to the window? The lenses has a minimum distance that the lenses needs to focus on.

Second: Have you tried to switch the lens to Manual Focus? Many times it's so much easier to Manually Focus the lens on the object verses on trying to let it Automatically Focus itself.

Do you still have your Owners Manual? The Owners Manual covers so much basic operations about the camera including on how to switch the lens from Auto to Manual and back.

Page 48 of the Owners Manual
http://www.nikonusa.com/...000_EN.pdf

First, there's a limit to how close you can focus. If you need to focus any closer, you need a macro lens. Your lens manual will tell you how close you can get. 1ft is probably borderline on the closest focus your lenses have.

Second, the camera is focusing on the background. By default, your camera will be in matrix focusing, which takes readings of many focus points then makes a decision as to where the focus should be. This works well most of the time, but there are a few instances where it doesn't work well - like focusing on water drops.

To prevent this happening, either switch to spot focus and select the focus point, or just go into manual focus and focus on the raindrops.

Manual focus will probably work better as if the raindrops are small, it might be hard to put a focus point on them.

That is the reason DSLRS have all those knobs, dials, and switches; you have maximum control over the camera and can adapt it to any situation.

You're too close.

AF doesn't always get it right. In those instances, focus manually. Check the user's manual.