This complete walk through of "Pokemon Diamond & Preal Remaster" provides everything you want to know, including how and where to catch Pokemon's, the location of important items as well as how to use them during battles.
A remake of Pokémon Diamond/Pearl, released at Nintendo DS in 2006.
The most comprehensive walkthrough including the new content from DLCs
Hori Split Pad Compact - Pokemon - Lucario & Pikachu