I think we need to ask ourselves a little but important question first.Why to learn English Just because we like it or it's our job requirements
If the answer is the former one ,I think we must know the way to learn English ourselves,because interest is the best teacher .But if the answer is the latter one ,there is also something to do with it.The first step is to correct our pronunciation,it's the most basic requirement to learn English well ,and we should remember that we need a very accurate pronunciation; Then ,practise English everyday ,both listening and speaking ,and write some articles if possible ,practice makes perfect.In the end ,try to like English ,we may watch some English movies or listen to some English songs ,cultivating an interest is also a very good way to learn something well .Moreover ,the movies and lyrics of English songs are good material for practice.
All in all,the best way to learn something well is to like it and practise it everyday.