How to study English well？

What should I do for study English well?
What can I do for studying English well?

what can I do for doing sth well
so it should be
What can I do for studing English well

what should i do for studying english well?
what can i do for studying english well?
and it seems that in this case learning is better than studying

What shall I do for studying English well？

What can I do for studying English well？

or
what can I do to study English well

studying not study

what shall i do with my english study?
i think its better.