Mandarin foundations

Two notations.
One way into sound.

Pinyin and Bopomofo help you read how a Mandarin syllable is pronounced. Neither replaces Chinese characters, and both need tones.

Which should I start with?

Pinyin is useful for many Mandarin courses, dictionaries and typing tools. Bopomofo is especially useful when working with Taiwanese learning materials. Choose the notation used by your course; you can learn the other later. Pinyin can accompany either simplified or traditional characters.

The cards develop written recognition. Pair them with listening and feedback from a teacher or trusted pronunciation resource.