Earth shaker is a really good support initiator and teamfight strength hero.
He is not noob friendly due to the mechanics of his skills, especially a bad fissure can turn fights against you. It will take some time to learn when and how to use it, so dont get frustrated if you are not that experienced, you will get used to it. You can play him on safelane to stack and pull and annoy the enemy offlane.You can roam or go solo offlane, even mid can be awesome in some cases. And remember, as TEAMFIGHT HERO YOU SHOULD always BE PRESENT IN ALMOST EVERY BIGGER FIGHT or GANK.