You can't set home or work address in Google Maps using PC. You must use mobile device. If you don't have one -- you're screwed. If you do have one and open Google Maps on it and go to My Places, as instructed, you may be surprised to find out, that this time you can't edit or delete your starred places and you must use PC for this purpose.
This is one of the most brilliant fuckups, Google Fucks has come so far!