Hello Gianni, It has been proven that the best way of learning is by doing, so when you meet something new in English, be it words or grammar, you should try to use these new things either in writing or speaking or both. Hope this helps Bob

memorize words

If you look for a passive way to improve your English, simply watch American or British movies with English subtitles on. It helps a lot. There are is no best way to learn English but mixing reading, listening and speaking is really effective.

I do not think there is a simple answer to this question. Different people learn in different ways. But perhaps you could think about any studying you have done in the past, and think about how you prefer to learn?