What's the best way to speak English correctly?

thanks, English is an international language ,so every body should learn English. I think ,if he or she talk to  others they will speak in English , and it is so easier way to learn English. thanks

Speaking English correctly ....... learn English correctly and then practice it regularly. You can speak English fluently.  Develop a thought that English is a medium through which you can learn people. You can speak any language fluently if you only have a good command over that language. Good command is when you dont search for words while you speak. If you have to utter a sentence your mind frames that sentence in your mother-tongue and brain translates it into English. To speak fluently frame the sentences in English. that is like "Think in English". 

The vocabulary you store in your mind differs according to your profession. 

To speak English fluently do things in this order

1. increase your vocabulary
2. Practice it in sentences regularly
3. speak with confidence.

Best Wishes

You need to pronounce words fluently

When someone speak a language very will, make sure that he succeed the listening skill, because of that you must be able to listen and understand native speakers, make relationships with native speakers and try to listen to discussions every day, don't forget to carry a small note to make a list for new words. I hop that this will be good for you >  (https://www.youtube.com/watch?v=lV7dQtq9E) This video is for non-native speakers.

Record yourself speaking and then listen to the tape, or ask a native speaker for some advice. Look for positive things, too. Make a note of all the things you do well when you speak English. If you are ever feeling unmotivated, look at the things you do well to feel great about speaking English again.