This document provides instruction on the proper uses of "will" and "going to" to talk about the future in English. It notes that "will" is used for promises and offers, while "will" and "going to" can both be used for predictions and decisions, depending on whether the prediction or decision was planned or based on evidence. The document includes several exercises for learners to practice using "will" and "going to" in different contexts involving offers, predictions, and decisions.