In the Safari app on your Mac, choose History > Clear History, then click the pop-up menu. Choose...

On your Mac, choose Apple menu > System Preferences, click Security & Privacy, then click...

Open the Photo Booth app (found inside the Applications folder). When you’re ready, click the...

In the Safari app on your Mac, choose File > New Private Window, or switch to a Safari window...

Choose Apple menu  > System Preferences, then click Users & Groups. Click the lock , then...

Hold the Option key and click the Apple  menu. Choose System Information. Under the Hardware...