Difficulty installing 'macOS Sierra'. Not sure what to do with 'APPLE SSD SM0256G Media'

Use Disk Utility to erase your Mac

1. Start up from macOS Recovery: Turn on your Mac, then immediately press and hold these two keys until you see an Apple logo or other image: Command (⌘) and R. 
2. If asked, select a user you know the password for, then enter their administrator password. 
3. From the utilities window, select Disk Utility and click Continue.
4. 
5. 
   
6. Select Macintosh HD in the sidebar of Disk Utility. Don't see Macintosh HD?
7. Click the Erase button in the toolbar, then enter the requested details:

• • Name: Macintosh HD
  • Format: APFS or Mac OS Extended (Journaled), as recommended by Disk Utility

1. Click Erase Volume Group. If you don't see this button, click Erase instead.
2. 
3. 
   
4. If asked, enter your Apple ID. Forgot your Apple ID?
5. After the erase is done, select any other internal volumes in the sidebar, then click the delete volume (–) button in the toolbar to delete that volume.
6. During this step, disregard any internal volume named Macintosh HD or Macintosh HD - Data, as well as any volumes in the External and Disk Images sections of the sidebar. 
7. Quit Disk Utility to return to the utilities window.
8. If you want to start up again from the disk you erased, select Reinstall macOS in the utilities window, then click Continue and follow the onscreen instructions to reinstall macOS.

How to erase an Intel-based Mac

How to reinstall macOS and an Active and Functioning Internet Connect is required. Best results is via a Ethernet cable to Router. If via Wifi -look for Wifi Icon and manually input the Wifi Password.

Welcome and Thank you too.