It can be pretty challenging to learn English. There are so many things that need to be remembered. There are also times when the meaning of the words may seem similar to each other but are also different at the same time. Some say that English is considered to be easy to learn.
You will immediately know what hello means in your language but if you would like to master English, it would take a lot of time. Even those who consider English to be their first language are not completely eloquent in speaking and writing it. It is a tricky language to use at times. Your determination to learn it can change things greatly.