I have a two year old son. he's quite a handful. I'm trying not to yell so much, but sometimes I lose it. What should i do after i've yelled at my kid?

When things have cooled down, you should talk to your child and explain why you scolded him. At 2, sometimes kids don't fully comprehend why they were being scolded especially if you yell at them. If you don't explain or make nice, he might just remember the negatives from the moment and not learn anything. At the end of the day, a child needs to know that whatever his parents do, it is out of love :)