I got a Shav's and I don't know what to do with it.

Grats!
If you have no plan on using it, just sell it and get your Kaom's Heart.
Because, why not? It's a game and you just need to have fun with your build not planning for everything.

@bunnyxian90 got a plan already, making a summoner like this (http://www.pathofexile.com/forum/view-thread/968988/page/1) and farm Atziry/Uber atziry and high level maps.
And all the fun I got from this game is through trying as much different builds as possible :P