Home Blockchain Lesson #1: How to use Averages to Buy and Sell. Blockchain Lesson #1: How to use Averages to Buy and Sell. By Chris Butler - April 3, 2020 1282 0 FacebookTwitterPinterestWhatsApp source RELATED ARTICLESMORE FROM AUTHOR Bitcoin Poker Online: Do all-in a blockchain Daily Wagers, Daily Wins: Take Part in the $BC Mining Rush for Big Rewards! Bitcoin and Online Casinos – How Can You Maximize Your Winnings