Scaling and point of origin I am following the blender tutorial on YouTube where he creates an anvil. In part one he extruded a cube up than did a loop cut and scaled it in. When I extrude my axis moves up with the extrusion and when I go to scale it it pivots from a corner rather than the center of the model. How to I get my axis point with the green, blue, and red arrows to stay at the bottom where I started the plane? Also how do I scale from the center rather than from a corner, I am just getting started on blender,  and I am used to solid works, so any help would be greatly appreciated! Thanks.
These commands should help:
"Set Origin"
  here you have several options in Objekt mode to place your origin
"Snap Cursor to Active" + "Median Point Menue": 3D Cursor
  here you can change your origin while beeing in Edit-Mode for 
  scaling from percise points  



Also you should look into the realation between Edit and Objekt mode:
Editmode transformation dont change the Objekt-Mode origin.