how do i make 3d models?

[thebgaming]

i recently got misfit model 3d, and i also recently got interested in making 3d models for srb2
there might be a tutorial, but i can't find any on youtube or here on the message board, or maybe atleast one that has all the informations needed
i want to make an 3d model for the old xtreme sonic mod (since it dosen't have that many animations so it wouldn't kill me) using this model

 

[Bleu Raspberry]

heres a zip template hope this helps! (only use the obj)