Is there any site or anything on the site that can help me check my grammar?

I just want to make sure my grammar is correct.

If you want to learn about correct grammar, rather than just correct what you've written, I suggest this site:
http://www.drgrammar.org/faqs/#44

It gives a mine of info and you can ask questions of it.

It is admirable that you are worried about having correct grammar. Pay attention in school. In doing so you will be able to rely on your own intelligence instead of asking others to do you work for you.

Information is below.