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 1448 0 FacebookTwitterPinterestWhatsApp source RELATED ARTICLESMORE FROM AUTHOR How Digital Gaming is Changing Gambling Habits The Future of Gambling in the Philippines: Digital Transformation & Regulation Can AI Help You Boost Your Income?