Noob Blender User [Help]

I just got Blender but I have no idea how to even use it. I want to make my own Tails model but again, I don’t know how or where to begin. ;-;

Blender is not easy to learn, its not the sort of thing you can expect to jump into, as is the same story with most high end 3d software.
I think a good place to start would be to watch some video tutorials on the fundamentals of blender, how to navigate around, where the common tools are and how to use the basics of those tools, once you are a little more familiar with blender then you can watch a video tutorial on character modeling, which there are many.
You could jump right in with the character modeling tutorial videos, which might work for you but having a foundation of basics will make watching video tutorials much easier to follow.