CELT (Center for English Language Teaching) is the largest international English language teaching center in Baku. CELT currently has the best English language centers. There are 14 centers in Baku, 1 in Sumgayit, and 1 in Istanbul.
You need more practice to know English perfectly. Normally, fluent English takes between six months and a year. but of course, it depends more on what level of English you start. The sooner you start English language courses, the better