Sort:  

cant help with slack question, im curious as well to that. but for the steem power go to you wallet and wether you have steem or steem dollars click the little arrow and say power up. then chlose the amount u want to poer up with and that will be converted to SP for you.

slack can;t be joined and most probably never will. go to https://steemit.chat instead.
Also, it's Steem Power not Steem Powder

Congratulations @gringo! You received a personal award!

Happy Birthday! - You are on the Steem blockchain for 3 years!

You can view your badges on your Steem Board and compare to others on the Steem Ranking

Vote for @Steemitboard as a witness to get one more award and increased upvotes!

Coin Marketplace

STEEM 0.22
TRX 0.25
JST 0.039
BTC 95759.82
ETH 3324.32
USDT 1.00
SBD 3.17