Data in particular is difficult. I majored in math - which was great for the theoretical underpinnings of mathematics (totally practical on a daily basis). The field of Operational Research was brand new when I was going through college, so again, not a huge foundation for this whole data thing.
Some of the resources I have been using, in no particular order:
- Computer Science Illuminated - this is my go to book for the CS Principles course. Great place to start.
- Code - great book
- List of Publicly available Data Sets
- Big Data at CSAIL - MIT
- Ted Talk - Human Face on Big Data
- Census Bureau API
- CEISE- live data sets
- Exploring Data