Curation Rewards:

Vote as early as possible after the content is published. Get in there before whales do, the difference between a 1 SP curation reward and a 0.01 SP curation reward could be seconds.
Don't vote on popular content. You should be one of the first voters of content that will be popular after publishing.
Downvoting reduces your votepower and wont give you any effort. Avoid it.
Dont vote for more than 20 posts every 24 hours.
Only vote content that has the potential to be popular.
Get as much Steem Power as possible

Posting Rewards:

When publishing content, it’s important to format your articles in a way that will make them easy to read. Lists with bulletpoints can be very helpful to display content in a userfriendly way.
Take your time to create the content. Spam usually wont get any payouts at all.
Make sure your content is unique and bringts a valuable benefit to the reader.
Always publish at least 1 Image in in a article. This image will be provided as thumbnail in the category overview page and will increase the attraction of the article.
Make sure you publish your content at the right time. English written content usually should be published at a time when Americans are online (about 7-10pm).
Choose the right category to make sure you target the right audience with your article.

I hope this Tipps could help your out to earn some $ with steemit. Thanks for taking your time and reading my post. Feel free to share your toughts about it in a comment.