Try not to burst into tears. I know it's easier said than done. They're little psychopaths at that age and will not care that you're upset in a compassionate way. They're learning the extent that they can impact the world, making you cry is fascinating, they'll keep doing it and hitting those buttons because it's fascinating.
If he throws a toy, say 'we don't throw, I'm putting this toy away so you can't play with it for a while'. Maybe try only letting him have soft toys and one harder one, if he throws the harder one then it goes away.
Biting and hitting etc - stand up and stop playing, say 'I don't like you doing that, I'm not going to play if you do that'.
Basically give a response to negative behaviour that makes life more boring and less interesting - fewer toys, less play. At the moment negative behaviour is rewarded by mum doing something a bit fascinating and dramatic (crying, getting angry) that makes him feel powerful. Encourage positive behaviour. Stop expecting him to genuinely care about your feelings, he's probably not developmentally capable of it yet.
These behaviours are usually better when they've had plenty of exercise, so a good run around in the morning and maybe after lunch too, and it's worse if they're bored. Toy box rotation or thinking up new play stuff (play dough, kitchen utensils etc - lots of books and websites out there with tips. Just don't put too much effort in as it might only amuse them for 5 mins)
You could also talk to nursery about their approach to problem behaviours and echo that at home.