[FONT="]I think the first thing you need to do is clarify what you actually want, devonpham.
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[FONT="]If you are hoping to attend a full-time course at a private language school, any reputable school will help you with all the legal formalities, and will also help in finding a host family.[/FONT]
[FONT="]If, however, you are hoping to come and live in England in order to benefit from the free education system, then I suspect that you will find it extremely difficult to obtain a visa. Before you spend too much time selecting a school or finding a host family, it might be a good idea to find out if you will even be allowed to enter the country. You should be able to obtain some information from a British Consulate in your country.[/FONT]