heloo i just learn english for a few month and i think it's very hard for me
so i want to ask you some question :
could you tell me how to study grammar well ?
how can i speak and reading englins well ?
Learning a new language starts by being hard. It will become easier as you learn more.
But you must practice it.
Read as much as you can; listen as much as you can to English broadcasts and films; write as much as you can.
On this site, there are tests you can do to help you learn how to use English grammar: English Language Tests - UsingEnglish.com
If you have any problems, post here and someone will advise you.