Yes only learning theory does not help you to become a successful trader. so after learning and gaining some knowledge start demo practice so that you will able to feel the real market fluctuations and volatile and from that demo trading you will be able to learn more and more new things, you do there some positive trades which will encourage you and increase the confidence, if you do some mistake and face loss in demo then you get opportunity to rectify your mistakes and can develop new strategy to become success in future.