Animations and keyboard tools, help?

HEY GUYS THIS IS MY FIRST TIME ON THE SITE AND I WAS TRYING TO GET SOME HELP WITH TWO THINGS!

1. I'm trying to change the Walk/Run/Jump/Idle and fall animations and i just need help with that

2. i'm trying to make it where I can make a script where i can use hopper bins or tools with keys in my game but I don't know how

If any one can help me or direct me to help for this, i would be very thankful.

Have a nice day!