If you have wifi in your house, it is fairly easy to follow the setup and connect to your home network. The tv then has some apps that are ready to go (YouTube, Facebook, Skype, etc.). As I mentioned in a previous review, no browser so you can't just go to any website you want, only what the apps allow.
You should be able to plug in a pair of headphones into the TV and be able to hear fine. If plugged in all the way, there should be no "noise" coming out of the Television itself. We currently have normal speakers plugged into ours and no sound comes out of the TV speakers, only the speakers plugged in.
We set it up in 20 mins - took it out of the box (it stands up) and plugged my mom's cable line into it from her cable box. After it downloaded the channels - we were watching in just a few minutes. We also hit the button on the remote for internet, added the password to our wireless internet, and we were watching Netflix immediately.
No there is not a working browser! I'm hoping for a future update with a new app from Vizio... You can't navigate to any web pages unless taken there by way of the pre-installed apps. This was an oversight on my part as that is something I expected but didn't ask the question. Otherwise, this TV is nice for a bedroom with no issues to date.