@OP.
First thing to do is get a spell-checker. MS Word has one. There are lots of free ones. Judging by your name, English is not your first language, so use your computer to help you write. Also get a browser with a spell-checker for when you post on the internet. I believe Firefox comes with one by default. Grammar is hard to master, but spelling is fairly easy to deal with, with a computer

Good luck.