I’m assuming you are using 4.2. For your 3rd question, CORE is an updated version of the fundamentals courses. going thru the older fundamentals doesn’t hurt and Modeling boot camp (WARNING: it is using pre 2.80 UI so it uses right click select.) chapters 3, 4, and 5 will expand your modeling ability. It really depends on what your plans are for Blender. For 3D Printing and modeling:
-Read 6 tips for learning and
–Blender Basics
-CORE(At least modeling, sculpting, and maybe Physics)
-Then Other things like Press Start or Catch. I’d recommend the Sessions courses. There’s currently 2 courses(Minimalism and Macro) and each section in the course can be done independently. Also they are roughly 2 hours(Watch time) each section.
–Blender Modifiers
–3D Printing or the newer PrintLab
If you plan on rendering images then you will need:
-CORE(Materials, Textures, Lighting, and maybe Compositing)
–Directing the camera
If you plan on animating:
– Concept Art and Draw. Maybe Panels
-If you want to get into the weeds of drawing then here’s the 2D Drawing Playlist.
-CORE(Rigging, Animation, and Physics)
–Rig – Character Rigging
