first. search bar. but seeing as you are incompetent to even use that, ill put adding videos onto your ipod very simply.
First, download Dvd Decrypter.
This allows you to rip a DVD to your computer if thats what you need to do. Very easy to use.
Second, download Videora Ipod Converter.
This allows you to convert any type of movie file to a file supported by the IPOD. Find where the movie is on your hardrive and click "Transcode New Video" on Videora. Then go to settings on Videora to see where the root folder is and voila, you have your movie in MPEG4 Format. Then go to ITUNES and press add file and find the MPEG4 version of your movie and add it to your playlist.