Going to make custom models, need help

[Jabre7]

I litteraly do not know in the slightest how to make a model, or texture it, or even upload it! I was going to make Monster Hunter World and Rise monsters in Generations Ultimate's style, any help will be appreciated, i will be using Blender to model and texture, and if anyone can give me the World/Rise models for Nergigante, Anjanath, Goss Harag, and Magnamalo for reference, it'll probably be much easier for me.