I would like to get more information about more formal English and I would like to
able to get quizzed on too.
I'm not quite clear about your question. If you ask us specific questions about problems you are having in English, we can try to help. There are lots of quizzes, tests etc on the internet.
According to your profile, you live in America. I'm sure some of your American friends can help you occasionally if you're writing a formal letter or email and you just need someone to check it.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.