It is very true as Jura has told you in your previous question that you should go for learning the formal speech first because the first and the most imporant thing is to learn to be polite. And Informal speech is I would say something that you can learn very fast and even on your own when you start interacting with different people... But yeah the formal speech would owe you more my friend...

Hi, it's me again Whitney! Here's simple 4 step plan for you to speak English like a native using Italki. 1.Click onto language Index in the top right hand corner. 2.Click onto English, then your language. 3.Click onto Knowledge. 4.Click onto;How to learn English as a native speaker. Good luck!

Hi Whitney, It can be frustrating to learn English for so long, and still not be able to follow every conversation (TV show, movie, etc.) because the so-called "common use" English spoken in Australia/US/UK/Other has some differences from formal English diction and grammar. But I agree with carrington ... master the formal (international) English first. Since speakers of English as a foreign language out-number native English speakers, it is not uncommon for a mixed group to gravitate (or even insist) on a more standard, international form of the English language. This is why I think carrington is absolutely correct in encouraging you make formal English a priority.

Hello Whitney, You would come across informal or slang English through native speakers or in literature ,sometimes literature uses slang expressions .So it is not bad to learn some or you will anyways learn ,but the formal language will remain the decent way of communication and the proper language for business and formal correspondence.

it is not good to learn informal English until you master the formal one. thanks.