Hello, first post here.
Trying this awesome software in the apprentice version.

I was looking at the forums trying to learn how to reset view on selected object
because my view is totally lost somewhere in the 2000 unit far far away from the origin.

I found many posts and also in the documentation, about SPACE+H or SPACE+G or SHIFT+SPACE+Z
but all of them do absolutely nothing.

I select my Geo node and press any of these key combos inside a camera or not inside a camera.

Nothing.

What am I doing wrong?

thanks

Move your mouse into the 3D window then issue the SPACE-H and SPACE-G.

If your 3D window is looking through the camera make sure your camera is unlocked or you will move the camera when you issue the keystrokes.