Add verticies

is there some way that I can add verticeis where ever I want? without subdividing?

Loop cuts - Ctrl r
Knife tool - Shift k
or simply with the Ctrl LMB in edit mode (I’m going from memory here cause I have the mouse buttons reversed)

EDIT > For me, adding a single vert is Ctrl RMB. But like I said, I have the mouse buttons reversed in User Preferences.

you can also select one, two or more verts (for Obi its the OTHER button), and E to extrude them and then move them wherever.

And for the record, I am left handed.

Metric Left Handed or English Left Handed