Help, please?!

We need gardening help! When we bought this house, we inherited a barrage of crazy plants, trees and bushes that we have no idea what to do with. There are many we can't even identify! I know that some of you out there who read this are more proficient in the yard than we are.... so I humbly beg for your help!

Pictured below are 2 different plants we cannot seem to identify. The first is a tree that has just recently started blooming-- beautiful yellow blooms. Anyone know what this is?











The second is much smaller-- more like a hydrangea. It has also recently started blooming and so far has dark pink blooms. Any thoughts on this one?





If you have all kinds of wisdom to pass my way, please feel free to email me instead of leaving a comment :)

Thanks gardeners!