We recommend three things for reviewing English grammar:
1. Exposure and Explanation
See the grammar used in context and understand how it works
Form: How do you make it? (word endings, order, sentence structure)
Function: How do you use it? (in what situations)
See grammar explanations and examples here.
Practice the grammar in controlled contexts
(through exercises, quizzes, making corrections)
Use the grammar in real-life situations.