These programs work by scanning the memory address where the game stores specific data (e.g., the player's gold amount) and overwriting it with a desired value (e.g., 999,999) or freezing it to prevent reduction.
Most trainers play a sound when activated. Press the activation key (usually F1 for the trainer interface, then NumPad1 for gold). If you hear a chime but see no change, you likely have the wrong game version (e.g., you have Viking Conquest v1.04 but the trainer is for v1.01). mount and blade warband viking conquest trainer
CTRL + L (Warning: Avoid going past level 62 to prevent game-breaking bugs). Map Teleport: CTRL + Left Click anywhere on the world map. These programs work by scanning the memory address