Everyone has their own way of learning, but for me, learning and being active is the best for me.when it comes to moving my knowledge to my head much faster and easier to understand.But I recommend that you find the best way for you to learn better

Learn vocabulary by topic
When grouped into the same topic, memorizing vocabulary is guaranteed to become much simpler.
This is a particularly good way for office workers because when you learn vocabulary in your major, you will maximize your vocabulary, making your conversations with colleagues or foreign partners drift. flowing and many ideas.
To improve your English at work, you can start with some popular topics such as: writing emails, giving presentations, meetings in English, working with foreign bosses, ...
Talk a lot
You should practice what you learned by speaking English regularly. For example, when shopping, try to name the items you want to buy in English, note down words you do not know to look up the dictionary and learn more.
When talking with your boss or foreign colleagues, even if your vocabulary is limited or the grammar is not strong, try to express what you mean with simple vocabulary.
In addition, you can ask a friend who is good at English to edit, comment for you to gradually overcome the weaknesses. Allow yourself to be wrong because English is not your first language, you have the right to be confident because you are able to communicate in two different languages.