1) Go to the ENB site (http://enbdev.com/download_mod_tesskyrim.htm) 

2) Download ENB v0.108 True HDR from that page.

3) Extract the downloaded file.

4) There will be 2 folders 'Injector' and 'Wrapper'

5) Copy the contents of EITHER of these folders to your Skyrim directory. (I recommend using the wrapper first; if you have a problem then use the Injector instead)

6) Copy my mods files (the Data folder and all of the files except the 'Options' folders) to your Skyrim directory, when it prompts to overwrite, say 'Yes to all' 

5) Now make sure that the Realisticlighting.esp and Realisticlightingpatcher.esp are are activated under the Data Files options in the Skyrim launcher (Or Nexus Mod Manager); the patcher should be after (below) Realisticlighting.esp in the load order.

6) If you are using the injector version, run enbinjector.exe (If you copied the files correctly it will be in the same folder there tesV.exe is) 

7) If you are using the Wrapper version, it detects the game automatically so no need to do anything. 

8) Start the game! It should show some ENB Series information in the top left corner once you reach the main menu, if it dosen't then some files have been copied incorrectly.. 

9) If you use the injector Alt-tab out and close the injector as its a cpu hog and is no longer needed to run the mod :) 

10) Optional Palletes are in the 'Optional Palletes' folder (Surprise surprise!); if you wanna use one besides the default palette select one based on the screenshots and copy it into the Skyrim folder. (overwrite)

11) If you wanna use any of the optional effects select it and copy it into the Skyrim folder. (Overwrite) 