In my opinion.

Hi. I would Iake like to do studying study English.
I will try. But I have a troble am having trouble.
I thinking. think that I am worry, worried about how I should study.
Shall I go to an acaderay academy (or a school)?
Shall I buy a English book?
감사합니다^^

There are many things you can do to study English. It depends on how much time you want to put into it and how self-motivated you are. Some people learn really well on their own, but most need teachers. My recommendation is that, in addition to learning vocabulary and grammar, you should watch English television programs and to chat with others in English. These will improve your listening and speaking abilities.

In my opinio.（opinion）

Hi.I would Iake  like to do  studying study English.
I will try. But I have a troble.
I thinking am thinking. I am worry, how I study. I am worried (that) how I can study.
Shall I go to an acaderay?  Should I go to a academy?
Shall I buy a English book. Should I go to buy an English book?

감사합니다^

Corrections in blue.