quick tutorial:
1. download firefox browser if you don't already have it.
http://www.mozilla.com/en-US/firefox/
2. install the videodowloader which is an add-on to the firefox browser
https://addons.mozilla.org/en-US/firefox/addon/2390
3. restart your firefox browser
you should now have a little icon on the bottom right of your browser window
when you hover your mouse over it the word "videodownloader" will appear
4. download and install the flv player [or use realplayer as described above]
http://www.download.com/3001-2139_4-10505954.html
5. go to youtube. open the video you want. click the "videodownloader" icon in the bottom right of your firefox web browser window.
6. a new window from videodownloader will open. click the button that says "download link"
7. file will be called "get_video"
save to disk [or where ever]
rename your file to whatever filename you want .flv
example: change get-video to nagua.flv
8. open with the flv player , realplayer, or video player of your choice that works.
good luck. hope this helps.
p.s.
tube sucker is also a popular piece of software that lets you batch download tons of video.
http://tube-sucker.en.softonic.com/
i am a safety freak when it comes to downloads on my systems. i won't use this one because i don't know what is in it. what if it has all kinds of mal-ware? lots of people use it, but lots of people don't care what infects their systems either.
if anyone knows the safety status of tube sucker and where do download a clean copy, please post. thanks
p.ps. while you are "borrowing video for educational purposes"
check out this video of ganil hawa , so romantic. we could all use a vacation like this
http://www.youtube.com/watch?v=ubxRW3HLH5A&NR=1