The Image Mod packs go in their respective subfolders under the Pictures folder. Components into Components, and so on. Make sure that you got the various pack files, not the so-called "Image Mod Mod." The P&N mod archive is set to extract to a subfolder by default, so just extract it into the SE4 folder. Edit Path.txt in the root SE4 folder to point to the name of the mod folder, rather than "None." Load SE4. It should now have P&N data files loaded. An alternative method for launching mods is the
Mod Launcher, which I would highly recommend over manual editing of Path.txt.