If you really want to improve your grammer, I think the best way is to read. Read books, read the newspaper, read whatever you can get your hands on. You won't realize it but you will soon start to absorb the language skills of better writers. Then, when writing something yourself, read what you have written and think about whether or not you could have said it better.

You did mention, however, that it is only on cannabis.com that you seem to have this problem. Could it simply be that you are too baked to use good grammer? :stoned: If that's the case, don't worry about it. Just remember, anyone who points out that you have bad grammer probably isn't as high as you are.