Data Science Minimum: 10 Essential Skills You Need to Know to Start Doing Data Science by Benjamin Obi Tayo Ph.D. via @TDataScience

Data science is ever-evolving, so mastering its foundational technical and soft skills will help you be successful in a career as a Data Scientist, as well as pursue advance concepts, such as deep learning and artificial intelligence.

This is a great shopping list and you can find free courses on the various MOOCs if you need to fill a gap in your knowledge. Certainly, I had to do a set of maths and statistics courses on Coursera to get myself up to a required level. Never give up - if something is difficult, find a free online course and plug that gap in your knowledge.

9 Free Programming Courses by Harvard, MIT, IBM, Google, and Microsoft by/via @dottedSquirrel

 And get optionally certified for the price of your groceries. 

This is definitely something worth investigating if this is the career path you want to take.

Going Beyond Superficial: Data Science MOOCs with Substance by Matthew Mayo via @kdnuggets

 Data science MOOCs are superficial. At least, a lot of them are. What are your options when looking for something more substantive?

This points you at four Data Science courses that are available via MOOCs that look substantial and well worth doing as well as you can in order to gain good skills that will be useful to you going forward. As with all MOOCs, there are free paths as well as paid ones that provide you with a certificate and a capstone. I would recommend doing the paid-for option if you can as it will be cheaper than taking a proper course at a University.

Bridging The Big Data Skills Gap With Online Training via @InformationWeek

From Information Week - Big data technology vendors are helping to close the skills gap when it comes to training the next crop of data scientists. Here's what they are offering.

A great guide to all the free training out there.