Look for the icon of a red rectangle with a white triangle inside. You'll usually find it on the home screen or in the app drawer. It's at the top-right corner of the screen. A menu will expand. It's near the top of the menu. You'll see your channel's homepage. It's at the top-right corner of the screen. This opens your phone or tablet's sharing menu. The URL to your YouTube channel is now saved to your clipboard. You can send the URL to someone in a messaging app, post it to social media, save it to your notes, etc. A tiny menu will appear. The URL now appears on the screen.

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Write a summary of the previous text in Chinese:
打开YouTube应用。 点击屏幕右上角的头像。 点击菜单顶部的我的频道。 点击屏幕右上角的⁝。 点击分享。 点击复制链接。 点击并按住你想要粘贴网址的位置，这样会弹出一个小菜单。 点击粘贴。