If you are trying hard to improve your English as quickly as possible, here are some good advice for you. Watch movies, tv shows, cartoons or whatever appeals to you in English!
At the beginning put the subtitles on to make it easier for you to follow dialogues and get used to the different accents and pronunciations. After a while, you’ll realise that you don’t really need them anymore as you start to distinguish words and entire sentences.
Read a lot! Books, magazines, newspapers. It’s easier to memorise words when you keep seeing them. Besides you’ll notice that writers tend to repeat the same words in a text: as wide as peoples’ vocabulary might be we all have our favourite terms!
Keep learning, you’ll see how good it feels when you become confident with the new language!