逐级学习
每门课程按级别划分，逐级攀登——有官方框架的语言就以其为准，如中文的 HSK。从你的水平开始。
Languages are learned in stages, and Bookverse lays those stages out. Each course is graded into bands, and you climb them one at a time rather than facing the whole language at once.
Where a language has an official framework, the bands follow it — HSK for Mandarin, CEFR-aligned levels elsewhere — so you are on a recognized ladder, not a private one. For languages with no official standard, the bands are a sensible beginner-to-advanced progression instead.
Start at the band that matches your level, and each one you finish opens the next.