Language level and study hours:
- Cambridge Assesment English, How many hours do I need to prepare for my exam?
- I KINDA LIKE LANGUAGES BLOG, How Much Time Is It Realistic to Learn a Language in?
Vocabulary per level:
- I KINDA LIKE LANGUAGES BLOG,Common European Languages Framework (CEFR) and Vocabulary Size
- AUCP, Level Breakdown and Equivalencies: including CEFR and ILR