Writing Techniques include Spelling, Grammar & Format. These basic techniques are required for written storytelling.
There are natural spellers & then, there are the rest of us. Spelling is necessary for writers to communicate their message. Several centuries ago, English was codified. Spelling has since been half phonetic and half memorization. http://www.kidsspell.com/
If the sentence doesn’t communicate your intended message; you’ve failed. Grammar provides the structure so the reader can understand the meaning. http://grammar.ccc.commnet.edu/grammar/
Short story, novella or novel, the formatting for each has general guidelines and may be also genre specific. http://hearwritenow.com/writing/general/story-length/ I especially enjoy flash fiction because the stories are short and to the point. http://en.wikipedia.org/wiki/Flash_fiction
Unless the writer has resources to hire a ghostwriter, editor and proofreader, it’s required to learn writing techniques to tell the story.