New Oriental is good, but it depends on the place. New Oriental in every place is a mixture of good and evil people. Beijing is the best. If you have the strength, I suggest you go to Beijing New Oriental. We had more than half a winter vacation, when many of our classmates went to Beijing to study.
If you have a junior high school English level, I suggest you learn the basics, not go to New Oriental. Basic grammar must be mastered. I think it's a good choice for you to hire a better tutor. Don't be shy. It is best to make up from the first grade. Believe me, my English major has passed Band 8. When I was a sophomore, I was still reading textbooks and teaching AIDS from Grade One to Grade Three. A lot of missing things can be made up.
I hope my words can help you and learn English well. Strive for an early harvest.