hearthome city
There is no town called dude in green suit but you might be thinking of Eterna city but the gym leader there is a gril so I don't know. Sorry I couldn't help much. :(
He is either outside the Pal Park or inside the building. You get to the Pal Park by taking the sea route using surf from Sandgem Town
Eterna.
In Eterna City, (the town with the second gym) beside the Pokemon shop, there is a building, go in and talk to the old looking man, then he will let you rename your Pokemon.
there isn't really an certain order you do the orburgh gym first sunyshore gym last eterna city 2nd the rest is any order oh yeah snowpoint gym is second to last. yeah there hope this helps!
Between the top right of Oreburgh city and Eterna city. You can also get to it from Floamora town.
Between Eterna City and Celestic Town. Look for the caves and go in them.
The lost tower by Solaceon Town, or in the Eterna side of the Eterna Forest.
you have to enter mount coranet from eterna or hartome!
you first have to go to floaroma town and then you can go to eterna city
you can find it either in eterna city or celestic town
Exit eterna forest, and go south on route 205.
you have to back yo jubilife city and head north into a cave and use rochsmash then just follow the route until you get to floraroma town from there you have to battle Mars, then you go through eterna forest and head into eterna city. (Spoiler, Cynthia will give you an egg that hatches into a togepi).
It is in the top right corner of Eterna City it is in the house with dude in it. WHERE IS IT IN PLATINUM In the same house not in Celestic town like every one says.
There is no town called dude in green suit but you might be thinking of Eterna city but the gym leader there is a gril so I don't know. Sorry I couldn't help much. :(
to get to fight zone you need to be at either eterna city or celestic town then on your town map just above eterna city and celestic town there is a place called snowpoint city you must travel there and there should be a sailor there that can take you to that island
Not were, but where, the day care in Pokemon platinum is in solaceon town which northeast of hearthome city