What is the best way for non-native English speaker to learn English fast?

Identify the purpose the non-native speaker wants to learn the language. This applies to any language, not just English. Once the learner identifies the use of language (Social, Professional, Daily) then the learning can be directed towards better learning.

The second step to learning any language is to remove the fear of failure. Our biggest inhibitor to learning a new language is fear. As we get older we start to realize that people judge our every action, if we can get beyond the fear of being judged for making a mistake in a foreign language it will help us greatly in acquiring the second or sometimes third language. 

After these two steps re taken, the next step to acquiring a language is to read in that language and practice it. 

1_He has to listen to English native speakers by using Yotube (movies, songs, stories..)

2_He has to try  to mimic what he has listened , guiss the meaning and look for difficult words and expretions. Also, EFL can speak with native speaker on the internet. 

3_He has to read stories and try to writ what did he understand and his point of view 

for a non native speaker, you can learn english by simply watching an english movie and try to imitate how these native speakers pronounce the words, also you can get a magazine or anews paper and read out loud the words infront of the mirror, you can check if you pronounce it correctly thru a dictionary or thru Youtue,remember that you will learn tings thru reading, listening and speaking, practice what you hear and read and sooner or later youll realize your doing the accent naturally as you get use to it.

Real conversation is the best way to learn english fast for non-natives speakers otherwise the alternative way is to listen to video taps, CDs, TV. or self-learn online 

Watching movies with the local language translation below the screen is a very helpful exercise for learning English language.

The use of visual aids are very useful when learning any language. Listening and repeating the word several times helps the student memorize the words. Group discussions with peers also helps because we learn from listening and watching others. Pairing a student that is a beginner level with a student that is an advanced level also helps students learn faster.

watching alot of english movies and listening english songs

DEAR FIRST OF ALL YOU SHOULD HAVE KNOWLADGE ABOUT TANSES WHICH IS THE MAIN ROOT OF ENGLISH SPEAKING UNDER PRESENT ,PAST , FUTURE .AFTER THAT UNDERSTAND THE WORD THREE COMENS EXAMPLE ( DO,DID,DONE ) AND  MOST IMPORTENT LAREN ACTIVE VOICE AND PESIVE VOICE AND DIRECT AND INDIRECT ,AND SPEAK ENGLISH WITH EVRY ONE THEN YOU GET HELP FROM PEOPLE AND YOU WILL ABLE TO SPEK WELL ENGLISH ,.

THANKS

Immerse yourself in the language as much as possible. Seek out native speakers and explain that you want to improve your English. Watch English speaking television and movies. Soap operas are the best since people speak slowly and dramatically to give you clues about meaning ;). Write down idioms that don't make sense to you and look for someone who can help you with these or search the internet. American English in particular is full of these.

it is really easy but from the net ... the non native speaker can speak very well 

try to repeat phrases from favorite movies in person and lisctne  to how a word is supposed to be prounounced first then practice the correct proununciation on every thing befour saying it