1st u have 2 get the national pokedex by seeing all 210 pkmn there is in sinnoh. then u get the poke radar. fly 2 canlave city, go east 2 route 218. look in the grass there. it's really rare & u need to use the poke radar to find it, it's in ur key item list. but u can find it. catching tip: use a qwik ball. u can get it at pastoria mart.
In Pokemon Diamond you must go outside Canalave and use the Poke Radar and you can find one. It is uncatchable in Pokemon Pearl, and Platinum. I'm not sure for Ruby, Sapphire, and Emerald.
No you can not catch dido in Pokemon sapphire but you can in almost all the other Pokemon games so all you have to do is trade dido over from one of the other games. Good luck
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
in the bush behind Kingdonimimo
There is no rental Pokemon in in Pokemon platinum