Ask HN: How to break GFW(China's Great FireWall )

Usually, it doesn't bother me a lot that FB, Twitter and blogspot etc. get blocked. I enrolled Stanford's AI and ML lessons today. And I find that I get blocked from YouTube to watch the lecture videos. It does make a lot trouble to me. I'm sure there are many hackers from China on HN. Would you please tell me how to break GFW? I would like to spend some money if a VPN is required.