Grammar

Your grammar is part of who you are and as such is unique to you. It doesn't matter a jot to me that your grammar lacks anything, it's you that is important.

If you can put across what you mean to say, and be understood, then your grammar is fine.

Having said that, should you wish to improve your grammar for any reason then my best advice is to either take a class, or find instruction online. Your grammar and how you speak and write should never hold you back in life.

Provided of course unless you plan on becoming a teacher, or editor of some periodical. Good luck to you.