Choice a miner ( doesn't matter what speed you Choice). 
Then reserve it for purchase through PayPal/Credit card/ Redeem code in the Play Store/App Store .
But you don't need to pay, because the first miner is active for you for free(Holiday) for a week with a speed of 9000 Hash. you can get up to 2000 Satoshi. 🤑👍
After 7 days you have to pay if you need to continue.

GL 👋🙂