The procedure is rather obvious… You can surely see the fasteners that hold the latch to the inside of the door. Remove your door panel completely and you will see whats going on…remove latch fasteners…and proceed to change out the latch. Its not a difficult job.
But if you need new door hinges it gets a bit more difficult…still not that hard to do. You will need to gather your parts…find some time and start wrenching. I’m sure you will be able to pull it off.