Many of you have complained to me (and to Microsoft) that you don't want File Explorer to open to the new, made-up Home. In Windows 7, Explorer opened to the Libraries folder. In Win8/8.1 it opens to This PC, which shows your main folders (Desktop, Documents, Downloads, Music, Pictures Videos), drives and devices, and network locations.
Here's how to create a Metro tile on the Win10 Start menu that opens to This PC and how to pin that tile to the desktop's taskbar. (I believe this trick is previously undocumented.)
1. In the Start menu's “Search everywhere” box, type
This PC (note the space). This PC appears as the first item on the search results list.
2. Click and drag that This PC item to your desktop. You get a shortcut to This PC.
3. Right-click the new icon and choose Pin to Start. That puts a tile on the right, Metro side of the start menu.
4. Left-click the new Metro tile and drag it to the taskbar.
You end up with a This PC Metro tile on the right side of the Start menu and a This PC icon on the taskbar.
You can use that new Metro tile, or the new icon in the taskbar, to open File Explorer at This PC. Removing it is as easy as right-clicking and choosing either Unpin from Start and/or Unpin this program from taskbar.