wooden door

Hello, This heavy duty wooden door has taken some damage from an over door hook. I'm hoping to tidy it up so it doesn't look as bad and was thinking some kind of tape secured across the length of the top of the door (top 2cm or so) might be the best solution with minimal effort required...

I’ve recently moved into a property so it’s my first effort at any kind of DIY. One issue we have is that the garage side door has rotted at the bottom, it doesn’t look like it was provided suitable protection. What is the best way to do this? I’ve heard of epoxy fillers but will this be...