The very first steps:

• Coding: codecademy.com
  Codecademy is an online interactive platform that offers free coding classes - including Python and SQL. It's perfect to test the waters.
• Statistics: Naked Statistics (book)
• Business: Lean Analytics (book)

Next steps:

• Statistics: Practical Statistics (book)
• Coding:
  • Install Python, SQL, R and Bash (step-by-step tutorial article)
  • Learn SQL for Data Analysis from scratch (my tutorial series)
  • Learn Python for Data Science from scratch (my tutorial series)

Start with these above -- and later in this course, I'll recommend a few more good resources.

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Extra 1:
Open data sets for practicing:

• Find data sets to practice: here
• Handpicked data sets to practice: here

Extra 2:

• Makeover Monday
• Deep Learning: Self-driving car in GTA (in Python)
• Visual introduction to understand classification and decision trees: here