As you write your posts, WordPress will begin to autosave your post as a draft. Use the Save or Publish buttons when you are ready.
Before publishing the post you can use the Preview button to see how it will look first. Right click on the Preview button then open it in a new window or new tab so you can easily jump back to the write post page.
The little calendar option just below the Save and above the Publish buttons will allow you to post date your blog posts. They will remain unpublished and then later go live on the site at your preset date and time. Click the edit link and those options will appear for you.
You may make a post password protected using this option.
Publish your post
!!! VERY IMPORTANT !!!
Your drafts will not be published live onto the website until you select the Publish button.