Scheduling a blog

I'm a little irritated that I was going to have my post for today ready to go and schedule it to post. I cannot for the life of me figure it out. So, all of you extra technical folks, if you know how to do this, please fill me in! I'm sure it's something quite simple. Although, I got that impression when I was trying to add a button link by adding the "code" to my site. I never got that to work either. Maybe I should just stick to the very basics!

Happy Monday!