I pretty much earned all of mine when on the Steem Block Chain. Best advice I can give, (and it may not be worth much), is to be you, be real. It took me two and a half years to get to the 3000 mark, some people do it a lot faster, some a lot slower.

Reaing and leaving real comments on other peoples post is one way to get noticed, however the comments need to be real, read, or look at, or watch, then let the poster know what you liked, what your thoughts are on the subject, something that gives feedback to the author. Some might vote your comment, some may follow you, some may ignore you. When the vote value was high enough a lot of people would vote on comments, with the price drop of Steem, people had to curtail their comment voting some. We will have to wait and see what direction Hive Token takes.

Voting on post will earn you a curation reward, you want to be careful about lowering your vote level to much however, or voting to much. If you find you your vote recharge time taking a long time to recover, then drop back to a 50% vote level . At 50% you should be able to vote for 30-40 post a day,