Some "real" publishing houses will not look at a story, novella or not, if it has already been "published" as you have done. Others don't care either way. Will it reduce the chances? That depends how well written the novella was. If it's like most "first novellas" are, the odds are it won't make a bit of difference, since first attempts almost always are the beginning of the 'learning curve' of learning to write.
I know. I am a retired newspaper journalist. I know how to write stores for newspapers very well...even feature stories...But I decided to write a novel and quickly discovered that fiction writing in no way even slightly resembles journalism.
Of course, there is always "self-publishing" or what is called "publishing on demand". That's simply a business that will charge you several hundred dollars to get your manuscript ready to kick out on a laser printer/copier and then bind it one of several ways, give you a place where you can post the book for sale. The money goes to the "publisher" and the web site and they send you your share of every book sold. Warning, your cut of a 200 page novel that sells for $16 is about $4.00. You might want to check out www.writing.com which is forum for writers of all types of fiction and non fiction, poetry and artwork. Lots of good information there too.
