I am a sophomore. Is it too late to learn photography and video recording, and it doesn't cost much?

No, I just learned it in my freshman year (2007) and opened my own photo studio last year. I suggest you take more photos and read some theoretical books when you have time. For example, photography and videotaping, photography in China, National Geographic and so on. There is also a look at some famous photography websites and look online. Both. This will be of great help.