Can some1 help me how to downlod video

hi, all

can someone help me to post the video link on the site? I mean i dnt knw 4rm where did u guys get the video links n download them n post it on this site? can pls help me n tell me 4rm where did i get the videos n download them n post the link on this dite 4 u? i dnt knw anythin abt that how to do it? if u guys help me i'll appriciates ur help n be more thankful to u.