If you're serious about writing a novel, the first thing I'd suggest is to look for a writers' group in your area. If you're planning a romance novel,
www.rwanational.org lists the chapters they have all around the country, so you may find one near you. If you're planning something besides romance, there may still be a group near you. In PA, for example, there's a fine multi-genre group called
Pennwriters that welcomes authors of all sorts. Other states/cities have groups like this as well. It's just a matter of figuring out what you want to write.