I think that's the best strategy right now. Comment as often as possible on higher profile posts and upvote at least the poster and their comments, keep track on the followers and upvote, resteem and comment on their posts and comments as much as SP and VP will allow, and then venture out into the tags in categories I like/know something about/would like to learn more, and look for more content.

As far as posting goes, I think trying to be a part of the general Steemit conversation helps for now, while beginning to write the kinds of posts you really like in a more gradual way.

That is, unless you're @davemccoy, then you just post what you want and run contests from the get go! 😃