How to learn English well?

From my point of view, we should do everything step by step. One often fails without good preparation.
Take English study for example. Just as Rome was not built in one day, it takes one years’ practice to have a good command of the language. If we do not learn from spelling correct words and writing acceptable sentences, we are never able to write a good composition. And without practicing oral English a lot, we can never speak English fluently. If we don’t read and listen a lot and do a lot of efficient exercises, we can not pass English tests.
In short, we should have a good foundation if we want to make great achievements in our studies and work or in other things as well.

1 letters learn words well by undering the pronounciation
2 read reading more

怎样才能学好英语？