On the home menu, hold down the R or L button to start the camera and change it to video capture. (A maximum of 10 mins can be recorded for 1 video)
yes
Yes. Although you can't really 'make' videos, you can take pictures and record videos with the Nintendo 3DS
No, but the feature is planned to be added in a future system update.
No you can not. Nintendo Video is for viewing videos only. You can record videos with a Nintendo 3ds, but you must use different software.
Yes
Yes, you can. The easiest way to do so is by copying the video from the SD card onto a computer and uploading it from there.
unfortunately, no
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 :)
its roumered that it will (hopefully)
no but there might be a update in July
You can't :(
Yes , use LunaPic In your 3Ds .