In order to master your Mac, you will need to enable Remote Management:

1. Open Settings
2. Select Sharing
3. Enable Remote Management

Your IP address will be listed on the right and under Remote Management: On.

To secure access to your computer, you can optionally add a password:

1. Select Computer Settings
2. Enable VNC viewers may control screen with password:
3. And enter a password
4. Click OK to save changes