If you mean Gardenia, the second gym leader, you should attack with Pokemon such as ponyta and monferno, staravia, ect and use moves like ember, flame wheel, wing attack, ect, basically flying and fire type moves. Alternatively, use Pokemon with poison type moves, however at this point in the game there aren't many.
Route 30
i don't think you can without the Pokemon modifier code
Yes in shoal cave.
At celadon city.
On amazon the hand book is $7.99 the strategy guide is $19.22. At wall-mart the guide book is $19.96.
No, you will have to get it from Pokémon Diamond, Pearl, or Platinum. Or you could just trade with a Generation V game (so far only Pokémon Black & White).
where there are Pokemon close to the level as your Pokemon
You cant catch groudon in dimond pearl or Platinum unless you Migrate from Ruby
Pokemon blue is a 1st generation game. Espeon is a second generation pokemon. This means it didn't exist in blue.
pal park u will need a game boy Pokemon verson to trade then u can get to pal park
by putting ditto and any girl Pokemon to daycare in five island the baby will be shiny depends what girl Pokemon you put
Solacion Ruins, go to Solacion town and go right.