This page covers the different battle aspects of Pokémon Mystery Dungeon to help familiarize you with the different way of battling from the classic Pokémon games.
Turn-Based Battling
As mentioned in Game Concepts, the style of Pokémon Mystery Dungeon's movement is turn-based, which means that you move, your team mates move, and then all other Pokémon on the floor move. This means careful move planning is needed before you move and end your turn.
Learning Moves
Learning moves in Pokémon Mystery Dungeon is similar to the way you learned moves in the classic Pokémon games. You learn them either by leveling up or by using TMs to teach Pokémon moves. TMs are found scattered throughout dungeons, and can also be bought at the Kecleon Shop from the brother on the right. Pokémon also naturally learn moves by leveling up to certain levels, or by evolving. Also, unlike past Pokémon games, a Pokémon can learn the same move multiple times. Therefore, if, say, you liked the move Ice Beam, and you had four copies, any Pokémon capable of learning Ice Beam could have every move slot filled with that move.