The following books can help you learn better and earn your Selenium certificate -Selenium Testing Tool: A Complete Guide by Gerardus BlokdykSelenium WebDriver with Node.js by Paul WatsonAbsolute Beginner Java 4 Selenium WebDriver by Rex Allen Jones IIMastering Selenium WebDriver 3.0 by Mark CollinSelenium WebDriver Recipes in Ruby by Zhimin ZhanPython Testing with Selenium by Sujay RaghavendraAdvanced Selenium Web Accessibility Testing by Narayanan Palani