Loading an animation on Button1Down event?

So here's the event:

Tool = script.Parent
Tool.Button1Down:connect(function()



end)

So What I want to do in this space of code in between my function is load an animation, but I don't know how to play it. Could anyone explain to me how you'd play the animation?

Also I'd like to know how to TakeDamage. Like all the stuff there is needed to know about it.

First off, it should be

MouseButton1Down

I don't know how to do the animation thing, sorry. As for the TakeDamage, you just need to change the health property of the player.