A:AnswerIf you already have Internet at your home then you can hook up the TV to it or use WiFi and connect that way, but, no, youtube doesn't just come with the TV.
A:AnswerYou can set a firewall protection on most WiFi routers. You will need to go into the WiFi Router settings to do so. Check online with your router make on how to do this.It varies by brand of router.
A:AnswerI suppose 30days or maybe less from Bestbuy or you can buy an extended warranty. You can also check Samsung.com and maybe register the TV you've bought with Samsung.
A:AnswerYou can remove a registered channel from the channel index that can be accessed by using the CH.LIST buttons on your remote. However, if you wish you can also restore the removed channel.