SimEnhancer 3D User Guide: (Click to see feature details)

Standard Naming Convention for Skin Files

SimEnhancer SEP User Guide (Click to see feature details about SimEnhancer Profile Files)
Note: This was written for SimEnhancer Version 1 but the same basic interface is continued in SimEnhancer 3D

Building custom skin sets using extracted NPC skins.

SE Object Manager:

SE Object Manager User Guide (Click to see feature details)

Cause and Effect Article (The main focus of this article is on the various causes of long game load times and the effects of using various methods to speed up game load times)

SE NPC MakeOver Kit:

SE NPC MakeOver Kit User Guide (Click to see feature details)

Building custom skin sets using extracted NPC skins.

SimEnhancer Tutorials:

Standard Naming Convention for Skin Files

Making Outfits Buyable Downtown (and on Vacation) with the Skin Makeover Kit

Formal wear for Sims Children

SE Object Manager Tutorials:

Add Object IFF's to Far Files - Tutorial for converting your objects to far files to speed up game load times.
(Check the Cause And Effect Article above to get a better understanding of why you may want to do this)