Here is a Quora thread on some of the resources you can use to get Deep Learning skills.
https://www.quora.com/What-are-the-best-ways-to-pick-up-Deep-Learning-skills-as-an-engineer
If you do not know what tasks to start to tackle you can try one of these https://openai.com/requests-for-research/, enter a kaggle competition or participate in http://course.fast.ai and do the assignments there.