>>1011818You've seen how the WIP modeling posts here do it. Slap some ref as images in the scene, build your model following the ref. The specifics depend on your exact workflow, sculpting or box modeling. Go to the blender general or anime thread or tutorial thread for tuts (including the archive on warosu) because it's the question that's been asked a billion times.
Also rather than specifically character modeling, learn the basic tools, like if you're gonna box model know how to quickly extrude or add or split faces and all that, if you're sculpting find a good sculpting tut. Some complain on tuts being timelapses but that's basically it, if you know the tools the timelapses are gonna give you workflow examples.
Later, for rigging, it's a bit different because it's more akin to programming so there are some real specifics but you're not there yet (and you can just slap rigify on it and get a passable result, otherwise look up p2designs).
That being said, for sculpting I started with those:
https://www.youtube.com/watch?v=irWAjPQyYzg
https://www.youtube.com/watch?v=J2_uiUEcY7w&list=PLe0O-ypJqvKw6meu68TlU0_motrjcnrva
and for poly modeling with this (but already knowing the tools): https://www.youtube.com/watch?v=ZXDwnAIFOHQ