Hi both Shirley & Karumu are right and you also can click onto the italki Resources & Knowledge sections to learn English that won't cost you anything. I don't think English will improve your lovelife, so I have to disagree with Kawa!

The importance of knowing a language other than your mother tongue will be different from person to person. English is the new lingua franca (a language that is adopted as a common language between speakers whose native languages are different) so it is important to learn if you wish to talk to people who don't speak your native language. The cost of learning a language is insignificant when you look at the new opportunities a language can give you. don't concentrate on the cost or difficulty of learning a language, concentrate instead on the benefits the language will bring to your life.

i donot know but ithink people want to learn english inorder to understand what do they say weh nthey make love

Because English is widely used in the world, people from different countries speak English.And English is an international language.As for how many people are learning English all over the world,I don't know.If you want to speak English well,you should practice as much as possible.What's more,I think if you don't spend enough time,maybe you can't study English well.