[Beasty]

You want some advice?

Watch youtube videos. Especially vlogs and such where the reading level is just a tad bit higher than the 5th grade. Get into debates and arguments and use the words you learn. Generally, you'll be looking up words and proof reading alot in the begining, but keep at it and you'll become accustomed to using them in the appropriate context without much thought. The more words you learn, the more you will begin to assosciate them with other words which you are familar with.

Of course, this is just vocabulary. Grammar is unfortunately a matter of memorizing rules and paying attention to what you type, I'm afraid.