I particularly enjoyed the hands-on approach to learning internationalization concepts. The practical exercises helped me understand how real-world applications handle multiple languages and cultural differences. Working with different character encodings and date formats was especially enlightening.

The most challenging aspect was understanding the nuances between internationalization (i18n) and localization (l10n). Initially, I thought they were the same thing, but learning about cultural context, right-to-left languages, and locale-specific formatting really opened my eyes to the complexity involved in creating truly global applications.

While the course covered the fundamentals well, I would have appreciated more examples of complex scenarios like handling pluralization rules in different languages, or working with currencies and number formatting across various locales. Additionally, more practice with professional i18n libraries and frameworks would have been valuable.