General Resources
Some dangerous dogmas about modding that you should be aware of.
An introduction to xEdit and its use.
A full guide to The Method conflict resolution.
FNV Resources
Community continuation of Bethesda's GECK wiki, maintained by NVSE modders; focused on GECK, scripting and game's inner workings.
Fan project focused on maintaining a high-quality, comprehensive and accessible encyclopedia about all aspects of the Fallout games, community and mods.
General information on LOD and how to generate it with FNVLODgen.
Guide on how to decompress all plugins in your load order for better performance and less stuttering.