Want to practice to improve your skills?

Here are some of my favorite resources:

  • SQL, Python, Java, Ruby:

    • HackerRank, practice challenges ranging from beginner to hard
      • Discussion pages have tons of useful examples and different solutions
  • R:

    • ListenData, Refresher on basic R commands and data manipulation
    • Analytics Vidhya, 40 questions to test your skill on R for Data Science


Want to learn new skills?

Check out these great tutorials & courses:

  • SQL:

  • Python:

  • R:

    • Udemy, Free beginner R course
  • Computer Science:

    • edX, Free beginner computer science course providing some familiarity with several programming languages, by Harvard