i need help!!!!!!

hey someone plz help me,,,,,i m unable to download large sized vidoes,,,,,,coz ita takes alot of time as a video of 2 mb takes more thn half an hour,,,,,,thtsy i m unable to c videos of NB2,,,,n othr serials,,,,,,so anyone plz tell me how u all download these videos ????is there any software tht helps us to dwonload the videos in a less time,,,,,,,??????plz plz plz i shall b vry thnkful to u😳