You already did without knowing it :)
Whenever you post on splintertalk and someone who has staked SPT upvotes it you will get SPT. I clicked like to your 'how do you get SPT" and you'll see 2.053 SPT beside the post. In a week you'll get half (1.026 SPT) and I'll get half.
It's only a penny but Hey, its the one time the term "penny for your thoughts" is actually valid :)
Have a great day.