Any help?

Do i have to own portal and hl2 to use source unpack or can i just own portal? Im new to speed running and i wanted my first game to be portal since i was inlove with it as long as i can remember.

Hey everyone, i want to start speed running and i still never tried it before, do you guys have some tips for a beginner or some beginner games to start me off with?

Thank you in advance.