The main difference between selenium 3.0 and selenium 2.0 is that now all the major browser vendors will provide their own WebDriver implementations (Apple, Google, Microsoft, and Mozilla) in Selenium 3.0 instead of being developed by Selenium project (Selenium 2.0) and because they know their browsers better than anyone else, their WebDriver implementations can be tightly coupled to the browser, leading to a better testing experience for you. In the current scenario where the Selenium has a great demand, you must go for automation testing certification with Intellipaat. This is a great training program where you learn Selenium in detail and you can grow your career in a better way.
To learn Selenium free of cost you can watch the following video tutorial link is down below:-