Welcome to the wonderful world of IT! The best way to learn and grow in this area is to find and follow the big players in this field such as IBM (there are tons of others). TechTarget has a website dedicated to this:
…and here’s a good article talking about what’s coming in this space next year:
I would recommend combining big data with something cool like security or IoT. There is a lot of growth in these areas and it’s actually interesting unlike other areas of this field. Best of luck!