We can mine steem by writing a blog on steemit account and we get upvotes and we earn steem . Besides this we can give answer of a question or asked a question in musing and we get upvote my musing and so we get steem.

We can upload video on YouTube and Drive and we get upvotes and on every upvote you earn a steem. Rather than that you can mining steem from faucet of Bitcoin as well.