I got a Nikon DSLR for by birthday last year. I haven't had much time to try and learn how to use it yet. My pictures are nice and clear but don't have the bokeh effect I want. Maybe a different lens would be better? Or can I achieve that effect with the stock lens I have? Basically, is it me or the lens? (I'm sure clueless folks like me are super annoying to people who actually know what they're doing, but I'd appreciate any input! Thanks in advance!)

Here's my specs:
D3100 + 18-55mm f/3.5-5.6 AF-S DX VR Nikkor Zoom Lens

Should I get the Nikon 35mm f/1.8G AF-S DX Lens that I've seen mentioned here?!