3rd person animations

Hi, i just downloaded a character from mixamo and i want to use it in Unity, the thing is that i need this character have some animations, like walking, running, jumping, but it seems that they´re not free on mixamo, so i tried to add a script to my character from unity but it didn´t work. and i think that i can add my own animations to this character but don´t know how to do this, so please give me your answers

Go in windows and click animation. Then go and check a tutorial and start moving the curves
http://unity3d.com/support/documentation/Manual/Animation.html

It will take a little while before you get to be able to do what you want but for example you can open an existing animation and see the value and alter to see the reaction (those should be read-only you won’t be able to modify and save them).

With animation I don’t think there is any other than practicing.