There used to be an addon that allowed you to create content with the WYSIWG editor which obviously made it easier if you don't do html, not sure if there is still something like that.
If you don't do html, the workaround is to create a post, publish it somewhere private, and then copy the source code for that post.
Very much a clunky workaround but until there is something more user friendly, that is what their is.