Where to put files?

Sorry about the noob questions, but...
I'm running LE 7.? (latest stable generic) on a PC (dual Core 3.0, 4 GB, 2TB).
Since I have a 2TB drive, I want to put my media (Movies, TV Shows, Music) on the drive, but where do I put them?
Also, I have a collection of 10K MilkDrop presets. Where is the best place to put these for use with projectM? Also, do the presets need to be extracted in a folder or can they be in a single .zip file (store, not compressed), like old school XBMC?
I can add sources, navigate, copy/paste, etc., through the file manager, I'm just not sure where this stuff is suppose to be put.
BTW, LOVE LibreELEC! I use to run main branch KODI on top of Windows, this is MUCH easier, faster, less resource hungry.