If your door sits crooked in its frame and rubs at the top or bottom you can easily straighten it back up by adding a cardboard shim behind the door hinge opposite of where it rubs in the frame. If it rubs on the upper half of the frame, shim the bottom hinge and vice-versa.
Blog - How To Fix A Door That Won't Stay Open Or Closed
How much gap is allowed between the door and striker plate - Home Improvement Stack Exchange
Common Door Hinge Issues and How to Fix Them
Common Door Hinge Issues and How to Fix Them
How to Fix a Rubbing Door: 12 Steps (with Pictures) - wikiHow
Fixing Common Door Problems - Pretty Handy Girl
Is adjusting door hinges difficult? My bedroom door looks a little crooked/must be slammed shut and I think hinge adjusting will help. - Quora
Bedroom door no longer closes because the top right edge butts up against the door frame. I tried re-aligning the hinges but it did not work. I am confused because the bottom
How to Fix a Crooked Door Frame - DIY - PJ Fitzpatrick
How to Fix a Door that Closes or Opens by Itself (Easy!)
How to Fix a Sagging Door