> IVs and EVs are fairly simple unless you want to do some code calculations. Which isn't even necessary unless you want to be a turbo-nerd and impress people with your knowledge of game mechanics.
> 
> IVs: Individual Values, aka DNA. There is an IV for each stat (HP, ATK, DEF, SpATK, SpDEF, SPD) on a scale from 0 to 31. Why those numbers? I don't have a clue. The higher the number, the higher that particular stat can become. IVs cannot be changed (unless you hack) as they are determined by "encounter." When you find a Pokémon in the wild or hatch an egg, it's IVs are determined right then. You can breed Pokémon for better IVs as it is rare to find one in the wild with good IVs. In ORAS, all legendary Pokémon have at least 3 perfect IVs.
> 
> EVs: Effort Values, aka how trained they are. This used to be complicated and time-consuming, aside from hacking, but with XY and ORAS it is actually incredibly simple. The Super Training function with the bags and the balloons will raise these on top of standard battling. A Pokémon can have a total of 518 EVs distributed throughout all six stats, with a maximum of 256 EVs in a single stat. Every 4 EVs put into a stat will raise that stat by 1 at LVL 50. This leaves a leftover 2 EVs that are completely useless and nobody knows why that is but it is.
> 
> And that is a crash course in EVs/IVs.

-Bunch of stuff I didn't know

Are the starter's IVs preset?

Edit: And how do you tell a Pokemon's IVs?