If you learn and practice English every day, you will be able to have a basic, maybe a little more than a basic conversation after 3 months. You will be able to be friendly, and probably do things like shop and go to a restaurant. You will be able to read many signs and understand people who speak slowly. Many things depend on how much time you spend every day learning and practicing. However, you will not be able to have complicated conversations such as about your opinions and complex thoughts and feelings.

You can try "duolingo" app on mobile l

Yes, move to an English-only environment and take a lover.

Absolutely, yes. I have learned Chinese for 32 days. Just listening and speaking only but i think that my Chinese is not too bad :)

learn like a child and try to avoid your mother tounge its hard little bit but its working