My Boss Actually Sucks

I work at a law firm and my boss is the actual worst. Today he puts a tape in my chair (like an old fashioned geezer because he doesn't want to update to something easier) asking me to do like 100 things only to realize halfway through the tape that I had already done them!!!! It makes me so MAD listening to him ramble on basically calling me an idiot without actually saying it until he realizes that I actually did all the work. The he has to come up with some other thing for me to do so the tape doesn't seem like a waste of time, even tho it still is. I just want my funeral services apprenticeship to start already to i can leave this dead end, low paying job T-T