It is really possible if you can be self-educated and learn a lot from different sources. Otherwise, you should find a person who is a pro at the trading and learn from him.
Learning from a professional trader is a much better experience as he will teach you systematically. If you want to learn it yourself there are lot of video available online but the information is scattered. You need to first find some good material and then go through it. If you are good at self learning, you can learn trading in a month or so. After that, you should actually start the trading slowly and learn with experience.