Books by Roman Alexander

Ripple and XRP for Beginners: The Guide to the XRP-Coin and the Blockchain Technology (Cryptocurrencies Book 2)
Roman Alexander

How to Develop Alexa Skills: The Guide for Beginners: Program your own Alexa Skill and become a Chatbot-Developer (Smart Home System Book 4)
Roman Alexander

IOTA: Die Einführung in die Tangle-Technologie: Alles über die revolutionäre Blockchain-Alternative (Kryptowährungen 3)
Roman Alexander