The only problem with Vim is that there's so much you could do, but only so much you can apply to muscle memory. In terms of "wielding it much better", what are you trying to do? Ask yourself, "What situations do I get myself in where I intuitively feel there must be a better way to do this?"

Does something take too many key strokes? Too much repetition? Do you need auto-complete for languages, projects, etc.? Do you have trouble navigating? Changing surrounding syntax? Give a bit more detail and I'd be happy to point out stuff you could/should be doing.

Most people will just throw out a laundry list of cheat sheets and useful plugins; while there are many of these, you should concentrate on efficiencies that will gain you the most productivity for your specific tasks.