Yes, the 3DS can be used to watch YouTube videos. However, the YouTube app needs to be downloaded first from the Nintendo eShop (at no cost).
You can download the Youtube application from the eShop if you want to watch Youtube videos, you can not watch video files such as mp4s, but if you upload them to Youtube you will be able to watch them :)
No.
YES
Go to YouTube they have everything
unfortunately, no
The DS doesn't come with YouTube, but there is a YouTube app that you can download for the 3DS from the eShop.
search on youtube
You can't :(
Yes, you will need to download the YouTube app from the Nintendo eShop first though.
Go on YouTube and search it up
Yes, but if you want to watch YouTube videos, you will need to download the YouTube app from the Nintendo eShop first (at no cost).