Yes you can learn but only if you went for right one. There are plenty of free training resources available but all of them doesn’t provide same type of training. Go for the one which helps you to learn from the very scratch level. For that, I would like you to watch this video -
This video not just covers theory concepts but also some hands-on projects and case studies for your better understanding. Upon completion of this training you will gain confidence to start your Data Science career.