Do these sentences mean the same
I will help you study English.
I will help you in studying English.
Although, besides "can't help doing something", the verb to help is to be followed by infinitive, you can use "help in doing something" referring to a continuous process, like learning a foreign language for example.
Personally, I'd sooner use help (to)do something for a definite action with a known or foreseen result.
Help me (to) do the dishes. (definite action, known result - clean dishes)