1. Tutorials

1.1 Data structures

• Self study guide, excellent examples and concise explanation
• TopCoder, Excellent tutorial with many examples (one of the most reffered resource on data structures)
• CodeChef, Tutorial on specific examples

1.2 Algorithms

• Great Overview of Algorithms, almost like cheatsheet of various algorithms
• Great overview of DataStructures,
• Complete CS guide
• Ipython Notebook from Introduction to Algorithms, MIT 6.006

2. Visualization

2.1 Sorting

• Comparing sorting algorithms interactive
• Sorting Algorithms visualized
• Non comparative but interactive
• Very beautiful and intuitive
• More controls, but non comparative

2.2 Other Algorithms

• Several algorithms
• Setosa - Explained Visually (mostly machine learning algorithms
• Various Algorithm visualization using python
• Illustrated step-through

3. Articles

• Timsort (real word sorting algorithm)
• Similar guide for programming
• Big-O Complexity Chart

4. Courses

Full university courses with videos and assignments

• MIT: Advanced Data Structures
• MIT: Introduction to Algorithms
• META: List of videos from other courses,

5. MOOC

List of list

• Data structures
• Algorithms

6. Cheatsheets

• Data structures