Q:

Disabeling of the translation selector

Is one able to disable the display of the axis translation selector? I'm specifically talking about this: .
I try to learn how to use blender, but i'm not able to properly follow my backround image because i constantly hit it when i try to add a point. It's really annoying because i have to add the point elsewhere and then translate it to the place it should have gone in the first place.

A:

I'm guessing you're adding vertices by Ctrl-clicking.

This button, or CtrlSpacebar toggles the visibility of the manipulator.
Using one of the shortcuts - (G,R,S) for translation, rotation, or scale, dismisses the manipulator, even if it was visible. 
In an orthogonal view, using E to extrude, (rather than place,) new vertices, allows you to move them about in screen space, without having to go to a separate operation.

