Join Date: Jul 2008
Location: Florida Panhandle
If, during normal use, I had a chair only 2 months old that broke like that, my first concern would be why??? I would be suspicious that if one joint broke then other joints may also be suspect. I would also be looking into what warranties are available.
On the other hand, if the damage was not during normal use then I would go ahead with a repair.
Since you are totally new to woodworking, Do you have any tools. Would you be able to make a floating tenon and the associated mortise?