Learn Spanish (Latin America): Empiezo a leer la nueva fórmula.

Placing nueva before the noun implies that the formula is a newly acquired replacement (new to you or new to the situation), rather than newly invented in the world. At this level, you will often see adjectives like nuevo placed before the noun to show this subjective change.

Why do we need the a between empiezo and leer?

Verbs that express the beginning of an action, such as empezar and comenzar, always require the preposition a when followed by an infinitive. It is easy to forget because English just uses the infinitive 'to read', but in Spanish, that prepositional bridge is mandatory.

This lesson focuses on the 'verb + que + verb' repetition structure. How could I apply that to the reading action in this sentence?

To emphasize that you are reading the formula continuously and persistently, you would drop empezar a and use the conjugated form of leer twice. For example: Leo que leo la nueva fórmula (I read and read the new formula / I just keep reading the new formula).

Why does fórmula have an accent mark?

The word fórmula is stressed on the third-to-last syllable (FOR-mu-la). Words with this stress pattern are called esdrújulas, and Spanish spelling rules dictate that every single one of them must carry a written accent mark.