I don't understand how anyone can study the English language. It's insanely tedious and boring, and, not to undermine your studies, but it's unnecessary. I couldn't tell you what the difference between an adjective and a verb is, but can I structure a sentence? Of course I can. Sure, I make mistakes when it comes to grammar, and I put commas in my sentences way too often (I failed most of my essays in high school because I used parenthesis too much).
That said, I also kinda owe part of my high school career to English, because It managed to get me published in something, don't remember what. I also used to have the "amazing" ability to spell really well. Scored 50/50 on the first spelling test in high school, they tested me again, got 100/100. They tested me yet again, and I got 150/150. Then I got moved up and English class and was forced to have a teacher I hated and made my life miserable for 4 years.
If you can spell relatively well, and make sentences not want to force people to burn books, then any further study is pointless, in my opinion. Also, they make you read the most boring books ever in high school. Probably why I've pretty much stopped reading books altogether. I used to really enjoy it too, then I discovered video games and booze.