Welcome to the 1I.
This is the first time you learn the English language. (some of you learned English at the primary school)
What is the best way to learn English and what do you have to learn?
Learning the pronunciation of a language is a very important part of your studies. If you want to speak a language well, review the pronunciation regularly. There are many exercices to do it!
Building up your vocabulary in a foreign language can take many years. Learning words in context is probably the most effective way to do this.
You could also try to learn words in a more systematic way - perhaps a certain number of words every day.
Familiarity with the grammar of a language enables you to understand it, and also to construct your own phrases and sentences.
Review all grammar exercices and never hesitate to ask questions during the lessons.