Put your name in there:
then you see what is going on.
You see that with 28 SP you have 0.00 impact, (it may be 0.0001), just vote what you like, and when you reach 500 SP then you get a slider to adjust the voting power. But for now: just vote as often as you want. It have no impact, but it looks good to the author of a post if there is a vote.
This is the best tutorial i have ever received in my life on steemit. Indeed, education is continuous. Grateful