- Solution: number guessing game - m move toggle - video
- Solution: number guessing game - d debug toggle - video
- Solution: number guessing game - n next game - video
- Solution: number guessing game - s show - video
- Solution: number guessing game - exit - video
- Solution: number guessing game - multiple guesses - video
- Solution: improve the color selector - filename - video
- Solution: improve the color selector - colors.txt - video
- Solution: improve the color selector - force - video
- Solution: improve the color selector - check input - video
- Solution: improve the color selector - video
- Solution: write report to file - video
- Solution: add more statistics - video
- Solution: number guessing game - video
- Solution: area prompt and warn - video
- Solution: area of rectangular - video
- Solution: Hello World part 1 - video