Need a little help - Sharing content and category dropdown

Morning tall all…Just recently discovered meteor and loving it! I’ve already put together a couple of nice community sites and trying to customize a litttle now. Im not a java wiz and need a little help. I’ve been going nuts last couple of days trying to add social charing but can’t get it done.

question…what is the best way to add post sharing option…twitter and facebook. Currently, I’ve tried {shareit} but buttons are huge!!

question…,with categories, how can I create sub categories. in my current site…would like to break categories up with a dropdown and have democrat - republican - independent sub-categories an list candidates accordingly.