Photography equipment lenses flashes etc

I'm working with a nikon d3100, and i wanted to know how could i get my image quality to look like the photos in the link below? Please help, any advice thing i need etc help.

If that is all you aspire to, then your camera will do just fine with what you have. Simply pop the flash up, dial the flash exposure compensation back to about -1 and shoot.
There's nothing special done there, there's no real skill required to do that. It's a bunch of basic, good quality snapshots.

You really need to take at least one class in photography to learn some basics so you can control your image production

For now, set the cameras white balance to incandescent, ISO to 3200 and shoot in the aperture priority mode with the lenses aperture wide open. That will get you started.

Flash will destroy all the ambient lighting, so you may want to avoid that