Hsk 1 Standard: Course
The book looks like a textbook from the 1990s: black, white, and grey. Minimal pictures, no color accents, dense text. Visually uninspiring compared to apps like Duolingo or HelloChinese.
Examples:
Do not rush past the introduction. If your Pinyin foundation is shaky, your pronunciation will be unintelligible. HSK 1 Standard Course