Congrats for first second go to prof oak just watch what happens it will scare you.
Nothing prof oak thanks you and that's it.
nothing happens unfortunetly
There are 150 Pokemon, 1-150 are found in Fire Red and Leaf Green as well as future games.
you have to see all the Pokemon through 150 then talk to professor oak
catch all 150 original Pokemon i believe if not its you have to catch all of them from the hoen region too
they spell the alphabet and maybe you get a rare Pokemon
catch all 150 Pokemon and go to celedon city into big building and talk to producer
you can't catch more pokemon. you have to get rid of some pokemon.
trade with leaf green. some Pokemon can only be found in one game and not the other.
you can get the Diploma from the guy in the Mansion in Celadon city.
Nothing special. They just spell out the alphabet, maybe you get a rare pokemon (;
You only get a diploma for catching them all.