I'm guessing you meant to type "Pokemon." You have to battle them against other Pokemon so they gain exp. The higher level they are, the stronger they are. There are also some items sold at Pokemarts that you can buy and make your Pokemon eat and it makes them gain a level, called Rare Candy. It's not sold at every Pokemart, though. Just the ones in the cities you go into later in the game.
after you get the poke radar use it in the grass and if a patch sparkels it is a shiny Pokemon
Yes
North of Sangem Town.
you have to get it as your starter or trade it.
HeartHome City
walk thousand steps
Viridian Forest
level 24
They are found in Viridian Forest, but are rare.
yes
Kyogre
save scizor from blizzard island