You can make pokeblocks at any contest hall i would suggest blending berries at lilycove city's contest hall.
You cannot make poffins in Ruby, Sapphire, or Emerald but you can make pokeblocks at contest centers
U feed pokeblocks that max out beauty like blue pokeblocks
give it to your pokemon, it will raise its Contest condition.
Depends on it's nature allthough usually it likes blue pokeblocks or pokeblocks with dry qualities.
Pokeblocks can be made in the Pokemon contest buildings at cities such as Lilycove,Verandtruff..etc..so you really dont need a link cable..
You can't keep one personally but you can use them in contest halls. Then, you can make pokeblocks. But first you need a Pokeblock case to keep all pokeblocks you make. You would need berries. Lots and lots of berries.
you feed it blue and indigo and gold POKeBLOCKS.
You can't. When you have altered a pokemon's condition with pokeblocks the change is irreversible.
contest hall
Make sure you have a pokeblock case and go in any contest hall and look for the blenders. Press A and you can berry blend, it creates one pokeblock.
There are no PokeBlocks in HG/SS.
If you put Soothe Bell on a Pokemon or give it Pokeblocks.