I'll be listing links to all the text tutorials and videos that I can find on how to create and model your own assets, how to add your own sounds, and maybe even some BGM tutorials if I get around to it. If you've got a link that is SOM related from this website or another, please send them via PM and ill include them here to save people sifting through the forum.
Weapons, armour, and items
Adding weapons, items and equipment
Get blacksmithing!
The DIY sword and metasequoia tips page
Map piece creation and importing
Map piece tutorial
Texturing and UV mapping
My fur texturing method posted by Hwtvlf
Alpha to black conversion
Animating
Video! SOM animation rigging tutorial
Misc
Video! Create your own level maps
Video! Create your own level maps part 2
Links to all things modelling, inspirations, and methods in metasequoia
Weapons, armour, and items
Adding weapons, items and equipment
Get blacksmithing!
The DIY sword and metasequoia tips page
Map piece creation and importing
Map piece tutorial
Texturing and UV mapping
My fur texturing method posted by Hwtvlf
Alpha to black conversion
Animating
Video! SOM animation rigging tutorial
Misc
Video! Create your own level maps
Video! Create your own level maps part 2
Links to all things modelling, inspirations, and methods in metasequoia