You could start .. .. replying to questions here ... right of the bat. You'll get rewarded 2 pints for each answer and sometimes even 4.

Next thing, you should look at the tag "Redeem Points" at your account. There is a wide plethora of gifts, you can exchange your earned pints for.

The only question is: 

Duìhuàn lǐpǐn de jiāofù huì zài běn shìjì huò yǐhòu shíxiàn ma?

or

兌換禮品的交付會在本世紀或以後實現嗎？

or

"Will the delivery of the redeem gifts fulfill in this century or a bit later?" 

I ain't that fluent ... I was using the translator, so you'll know!