For me, reading books is more helpful. When you read, you can really improve your vocabulary and reading skills. Books usually have more details than videos, so you can learn more about a topic. Also, you can read at your own speed and go back to difficult parts if you need to. Plus, you don't need the internet or a phone, so you can read anywhere.
對我來說,閱讀書籍更有幫助。當你閱讀時,你真的可以提升你的詞彙和閱讀技巧。書籍通常比影片有更多細節,所以你可以更深入了解一個主題。此外,你可以以自己的速度閱讀,如果需要的話還可以回去重讀困難的部分。再加上,你不需要網路或手機,所以你可以在任何地方閱讀。