Focus on communication
I think learning English shouldn't focus too much on the grammar to the point of forgetting practice other skills, such as reading / writing / syllable stress / pronunciation, and personally, I think including slang words and idioms onwards, because if we just focus too much learning the grammar, finally we won't be able to communicate, but actually, even through we've studied grammar (in classroom), many people still don't use it correctly.
Therefore, we shouldn't only study English in the classroom but should learn from other learning sources as well, such as social media / tutoring institute etc.
This is my first blog
Thank you !