If you want to get into fiction, starting out by writing a novel is time-consuming and very difficult. Chances are you won't get your first few manuscripts published. After all, you're still honing your craft.
Try short stories instead. Something between four and six-thousand words. Once you've got an idea, you can get a short story on paper and finalized in less than a week depending on how diligent you are at it. With that done, and depending on your chosen genre, there are thousands of magazines both print and online that you can send to. The practice will help you hone your craft so putting together a book's full length storyline won't seem so daunting. You probably won't make much money, but some magazines do offer feedback that can help steer you in the right direction.
Also, as you're writing for a paying publication, it will challenge you to better yourself in a way that Hubpages can't. After all, with magazines you're competing with hundreds of others. Average publication rate means you get rejected 40 times for every publication, but taking rejection and the punches to your ego is something you need to learn to handle if you seriously want to be a writer anyway. Best to get it out of the way early and develop a thick skin.
Once you're getting shorts published regularly, you should be able to write a book without trouble. The only hassle will be keeping it short enough to fill just the one novel, you'll be so good. So once you've got your manuscript written and polished, it's time to run the gauntlet. Getting a literary agent is one of the toughest things a writer will ever have to do.
You'll need two books, a lot of printer paper, ink, envelopes, and stamps, because a lot of agents out there have never heard of email. Buy a copy of How to Write Attention-Grabbing Queries and Cover Letters by John Wood and study it like the Bible. Follow the instructions to come up with samples of your manuscript, query letters, and cover letters. Then buy a copy of The Guide to Literary Agents by Writer's Digest Books. Find every agent out there interested in the genre of your work, tailor your query letter to each one of them, and send it them out en masse. After you've sent a few thousand, there's a chance one will be interested enough to write back asking to see the whole manuscript.