- Fix many errors and facts to be more accurate.
- Add more examples and cover all four commonly used functions.
- Rewrite parts to be more clear.
- Add some useful notes and warnings ... memory allocation is error prone!
* Translate challenge subtitles and example challenge text to Spanish
* Corrected errors in syntax and punctuation
* Multiple corrections of it/s to its plus other grammar corrections
* Correction and added paragraph to CSS Flex article
* Corrected my own typo
* Corrected capitalization, American spellings and typos