Mac 无线热点 How to Setup a Wifi Hotspot on Your Mac.

Sharing your internet connection with others through wifi, is easy. follow the steps and your Mac will emit a wifi signal.

 

Step 1: Open System Preferences.

 

Step 2: Open Sharing, in Internet and Wireless Section.

 

Step 3: Select the Option of Internet Connection You Have on the Computer.

I use ethernet connection. Any of the options on the list still work.

 

Step 4: Select the Wifi Option Below.

 

Step 5: Then Go to Wifi Options and Set the Password.

 

Step 6: Then Tick Internet Sharing Option, on the Left Side.

 

来源：http://macintosh.wonderhowto.com/how-to/setup-wifi-hotspot-your-mac-0138193/