I stumbled across one dead link on the Modeling Resources page, then checked the rest to see if there were others. Full sentences for context.

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Notes for modders from Symphony team (in Russian, auto-translate works well) contains many notes on Max and modelling in general.

404, same URL as the one above:

For more advanced uses, Notes for modders from Symphony team (in Russian, auto-translate works well) contains many notes on the nif format and modelling and much knowledge that can be applied in NifSkope.

404:

The previous version of the new nif exporter: Blender 2.78 version by @Greatness7 on the Discord server.

Redirects to forums home:

DDS is the standard format for Morrowind. Use DXT1 compression if the texture has no alpha channels (has no transparency), use DXT5 if it has varying alpha channels (or DXT3 if it has only on/off alpha with no gradient). See this forum link about texture formats and optimisation.

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In addition, if you have textures with alpha testing similar to tree leaves, you can try to tick "Preserve alpha test coverge" for better results.

404:

Transparency: NiAlphaProperty flags, usual values are 237 or 4845. Alpha blending parameters use a similar format to Oblivion and Skyrim, some of the same tips apply.