Publishing consistently is the best way to become an accomplished hubber. New hubs with original, useful or interesting content will draw traffic like moths to a flame.
Other tips are what you're going to hear everywhere else: read, comment and follow other hubbers, share other people's work, spend time in the forums, in answers etc.
But really, writing lots of good hubs is the best thing you can do. Glad you've started publishing! Welcome (sort of) to HP!