Here are some resources for help with your blogs and publishing:

WordPress Beginner: https://www.wpbeginner.com/start-here/

Writing & Publishing a Post: http://wordpress.tv/2009/01/15/writing-and-publishing-a-post/

Draft Posts: http://wordpress.tv/2009/01/14/saving-and-returning-to-draft-posts-pages/

More:

http://wordpress.tv/2009/01/14/adding-categories-and-tags-to-your-posts/
http://wordpress.tv/2009/01/14/publishing-your-post-at-a-later-date/
http://wordpress.tv/2009/01/05/embedding-photos-video-audio-into-your-posts/