Drag and drop: NMSE_Core_1_0.dll, NMSE_steam.dll, and NMSELauncher.exe into the binaries folder (right next to NMS.exe). Then create an NMSE folder in the Binaries folder (...\No Man's Sky\Binaries\NMSE) and drag and drop TabbingFixExample.dll into that.
Just run NMSELauncher and the game will run and load in the DLL :)
If anyone of that was too much feel free to ask. But if you feel overwhelmed please wait until more advanced and simplistic versions of the extender are released before attempting to mod with it.