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.
Nintendo Switch Power Extended Version (GW Coupon is not applicable)
Sand Land Complete Walkthrough
Hori Split Pad Compact - Pokemon - Lucario & Pikachu
Elden Ring Platinum Game Guide