Revise 2.6 Data Representation by downloading these lessons:

2.6 Data Representation – Lesson 1
2.6 Data Representation – Lesson 2
2.6 Data Representation – Lesson 3
2.6 Data Representation – Lesson 4
2.6 Data Representation – Lesson 5

Revise 2.1 Algorithms by downloading these lessons:

2.1 Algorithms – Lesson 1
2.1 Algorithms – Lesson 2
2.1 Algorithms – Lesson 3
2.1 Algorithms – Lesson 4
2.1 Algorithms – Lesson 5
2.1 Algorithms – Lesson 6
2.1 Algorithms – Lesson 7