I don't know how to get rid of this grid I am trying to make bones for my character but when I use shift+A in edit mode I get a mesh displayed. Earlier I could make an armature bone, but now I cannot. Here is how it looks now:



I would like to know how to get to normal faze like I had it before this problem.
You're in Edit Mode. In Edit Mode you can only edit data of an object (in this case your mesh).

Go into Object Mode by pressing the TAB key.