This is a good site showing who to trust (or not) when it comes to self-publishing:
Self-Publishing Services Rated by the Alliance of Independent Authors
New Rules for Writers -- Your Novel Blueprint -- Advice for Writing -- Writers Need Followers? -- Good Article About Storytelling -- Best and Worst Self-Publishing Sites -- Thoughts on Writing -- More Advice for Writers -- Ingredients of a Novel -- Lee Child Quote -- Elements of a Story -- Still More Advice for Writers