What is the easiest way to learn spoken english?
English isn't easy as it is evolved from several languages including Latin, Greek, old French, German, Indian. Several words have the same sound but different spellings and different meanings.
The most important difference between English and other languages is it isn't tonal and each word is divided into syllables. It is the accurate and clear sounding of each syllable that is particularly important in spoken English rather than the sound of the word the syllables produce when joined together.
This requirement means English is spoken of necessity, more slowly than many other languages and often even more slowly when communicating something important or emphasising something.
Although the language isn't tonal in principle, slight changes of tone when speaking are normal in order to modify what is being said in order to communicate humour, irony, sarcasm, seriousness and so forth and in the matter of personal speech facial expression can, in addition, be an important factor.
Spoken English in person often includes a literal misdirection where what is said is deliberately understated or overstated and the listener should recognise these devices by also recognising the tone changes, emphasis changes and alteration of the facial expression.
Colloquialisms are often included in such speech. Reading novels is one good method of building a store of such devices.
You won't do better initially than investing in a good dictionary - The Oxford English Dictionary is best for British English and Webster's for American English. Once you have learned the correct pronunciation of the syllables these books will provide much information about the meanings of words and how they are pronounced.
Watching films and television from the English-speaking world, especially the older films and making notes of what isn't understood and these will be found to be invaluable in the use of the language, an appropriate tone of voice and facial expression...
English speaking radio is almost equally important and a wide variety of audio and tv is available on the BBC website and the podcasts from CBC are particularly good.
Practicing by reciting into a recording machine and then listening to the result is almost as essential as practicing in person with any good English speaker where you are.
One thing of particular importance is the matter of grammar. When you know what you want to say in your first language the temptation is to translate it into English and then speak but unfortunately a direct translation usually makes little sense. It is important to try and think in English in order to be better understood.
I hope this helps...