The greatest way to learn a human brain is to practice. The best practice to teach someone a foreign language or simply to get better, is to use new phrases and words and put them in a sentence and make it correct.
When finding a new word, ALWAYS review the context. Ask yourself: does this word fit here?
<u>nr.2</u>
Use apps to learn English or simply watch grammar videos :)
<u>nr.3</u>
Use interactive sites
This has personally helped me, it has interactive tasks and you gain reading comprehension