Force_of_Nature
[12] Conqueror
Story mode teaches you how to play the game with their challenges.
Story mode goes over the different elements of DOA5's gameplay but I didn't really learn anything with relation to how to play the game properly. It's probably not helped by the CPU not really providing a challenge until the last few chapters. For instance, if you go from playing and completing Story Mode to playing online, you likely still won't know what you're doing and are likely to just throw stuff out frantically or play overly cautiously.
Training mode only helps if you already have an idea how the game is supposed to work and understand frame data. On the other hand, training mode is fantastic for advanced players though with its move details and many customizable options.