A: Approximately 80–120 hours of focused study. That’s 3 hours per unit (28 units) plus review and testing.
A: It's challenging but possible. Real A0 learners may want to first complete a simpler book like English for Everyone: Level 1. Destination A1 A2 assumes you know the alphabet, basic nouns, and "I am/you are." destination a1 a2 grammar and vocabulary pdf upd
The updated PDF is designed for flexible use: A: Approximately 80–120 hours of focused study