If you just want to keep it for a month or two, put it into your "Savings" in your Steem Wallet.

If you want to use it to grow your value on Steemit, sell it into Steem then use the Steem to "Power Up". If you power up, bear in mind that powering down divides your withdrawal into 13 equal weekly payments (about 3 months) to avoid "gaming" the market.