Animation cancelling is usually used when fighting the creatures (also known as creep) that automatically spawn for the other side. To answer your questions in point form:

• It's done by simply moving your character before they auto attack the creep and take down their hit points to a point where your creatures kill it by auto-attacking. You simply ensure that your character's attack will do enough damage to kill the creep.

• Whenever you can because it is always important to get last hit on the creep as it is the most viable way to get extra income in the game.

• It is important because if you get the killing blow you get extra gold for the kill whereas if you only help damage it and are in range when the opponents creep dies, you only get experience. This last hitting effect also applies to towers.

Animation cancelling is usually used when fighting the creatures (also known as creep) that automatically spawn for the other side. To answer your questions in point form:

• It's done by simply moving your character before they auto attack the creep and take down the target hit points to a point where your creep will kill it by auto-attacking. You simply ensure that your character's attack will do enough damage to kill the creep.

• Whenever you can because it is always important to get last hit on the creep as it is the most viable way to get extra income in the game.

• It is important because if you get the killing blow you get extra gold for the kill whereas if you only help damage it and are in range when the opponents creep dies, you only get experience. This last hitting effect also applies to towers.