typically kit lenses aren't all that great to create bokeh; it's about the f/stop and depth of field normally.
some good lenses for bokeh are the 50mm 1.4 (expensive) or 50mm 1.8 (cheaper). you see, the higher (technically speaking, lower) number the f/stop, the greater the depth of field. 3.5 is an all right f/stop but if you want more bokeh, buy a lens such as the 50mm 1.8

if you'd like to keep the lenses you've got, just get a subject, and put it in front of something that light reflects off of (holiday lights or fields of grass/shrubbery [except the grass will have to have further explanation below]). you'll need to focus on your SUBJECT not what the bokeh is being MADE OF. say you took your kid sister out on some grass, you'll focus on their eyes instead of the grass around them (depending if you want the bokeh to be the grass, or your kid sister haha). or if you took a small object for a still life, (such as a jar filled with tiny objects), you could put it on the grass and focus on it, not the grass, to create bokeh, because bokeh is the out-of-focus part of the picture, not just "orbs of light".

holiday lights can be hung by the ceiling to create nice bokeh.

try doing this with different angles/objects/focusing points.

shrubbery and grass only create nice bokeh when the natural light of the sun is reflecting off of it. when you want to do this, make sure it is either early in the morning (when the sun rises) or late afternoon (before the sun sets). this is because when the sun is high in the sky (around 11:00 until 4:00), its rays are at their harshest and creates an ugly coloring to the camera, even at a low ISO speed. typically when you're shooting in the morning or in the afternoon, it's called "golden hour" because the light is golden in the sky when the sun sets/rises, which is good for portrait. (natural lighting from the sun is great for portraiture)

by the way, even if you're a noobie =), ALWAYS use the manual setting. it will take awhile to get used to, but manual is the most hands-on setting, which is good to take the photographs that YOU want, not what some sort of "auto" setting on the camera does. make sure you understand your DSLR so the pictures are not over or underexposed