Interested in learning jazz? There are some great jazz piano lessons. Jazz is not simple. It takes some structure to learn. There are some good free lessons online but the trick is learning in the right order.
Here are some of the good video jazz lessons. (Not for complete beginners - try to learn chords and the notes of the piano keyboard first.)
A little bit more advanced, a jazz/blues improv lesson:
There are many more videos. You can search below to find others that suit your level. Also, check out the page on jazz chords.