Buy as much Steem Power as you can afford with STEEM or BTC or other altcoin, from an exchange. Go to your profile, then click the Wallet tab, then on Steep Power, and Deposit. A window will open that will show you how to buy. The more power you have, the more your curator activity will be rewarded, it multiplies all profits you make as curator. Also the Steem Power earns interest over time, so it's good to hold a lot of it.