Run your own spellcheck, don't make me do it for you.
Learn its vs it's.
Don't use the future tense unless you absolutely have to. "When you run this program it will delete your files" is better written "Run this program to delete your files" or "This program deletes your files" or any of a zillion other similar ways.
Try to find the shortest way to say something. Try so I don't have to. Please. At least avoid bullshit deletable phrases like "the kind of thing" and twaddle like "is the reason for" (usually a longwinded way to say "because").
I'm sure there's more, but this is a good way to start (no, Dan, you didn't prompt this:-).