I really like Steven Hawking. He was the first person to set out a theory of cosmology explained by a union of the general theory of relativity and also quantum mechanics.
yeah he has an amazing mind and is just so intelligent!
Indeed he is, He is also a vigorous supporter of the many-worlds interpretation of quantum mechanics.
oh man quantum mechanics sounds just so complicated
Indeed it does at first, In fact most theories in classical physics can be derived from quantum mechanics as an approximation valid at large (macroscopic) scale.
do you know how old he was when he made the discovery? Or can you tell me more about him?
He learned it at a very young age in college I believe. Their really isnt any info on the actual age he started learning about Quantum Mechanics. 
i wonder how much of a big deal it was in his college days, did he win any awards?