You can record your screen using built-in tools or apps. For example, on Windows 11 press Win + Alt + R to start recording with Xbox Game Bar, or on macOS press Shift + Command + 5 to open the screen recording menu.
yeah built-in stuff is best for no watermarks like everyone said. if you want something more powerful for pc without a watermark, obs studio is good but kinda overkill for a simple tutorial imo.