There are some of the very good publishers who can publish your novels and books, but the established brands are a bit elite and too costly for a budding author to start so one should also look for some upcoming publishing houses and companies who can publish the books or novels
It is better to have a professional do it for you because a single person can not do all of this and not give up. You have to write the book as well! An unprofessional or crappy blurb will act as a hindrance your dream of becoming an author. So, will a poor work at editing. Lack of good editing results in a one or half star review which of course, will indeed sabotage your sales. A little investment goes a long way.