How do I learned English in just 5 months

As an IT, I know that the first thing that I have to do before starting any project is to follow the right steps. So below are the rules that I have been followed:

1. First I applied the Pareto principle, which says that 80% of the effects are due to 20% of the causes. So the application of the Pareto distribution to learn a language is to learn 20% of the target vocabulary (http://www.englishspeak.com/english-words.cfm).

2. Then, I memorize them following in this way. First of all you should have some English learner in your friends list (Vk, Facebook, Skybe...etc), the reason behind this is just to find someone to talk with when you want, over 24/7. What is this way (strange sounding sentence)? You have to start your day by reading or listening and while you do you have to get some new vocabulary. Afterwards, and in the same day, when you start talking with friends try to force them to talk about topics where you can use the vocabulary that you got. In addition try publishing attractive(interesting?) posts and asking questions on in groups about something where you can use the vocabulary that you got.

3. Then I joined Duolingo (https://www.duolingo.com/), a superb and very famous website that will help you to learn any language using your mother tongue. Also Memrise (https://www.memrise.com/) it's another amazing website. And at the same time :
- I joined Quora, a website where you have to answer or ask questions (now I have 106 answer, https://www.quora.com/Djebali-Ahmed).
- I listened to podcasts (https://player.fm/series/learning-english-broadcast-voice-of-america)
- I watched domain's documentaries (recommended)

Amazing work for only five months! bravo.